## Step 1: Define the symbolic representation of the problem
The problem involves minimizing an objective function subject to several constraints. Let's define the symbolic variables:
- $x_0$ represents 'milligrams of zinc'
- $x_1$ represents 'milligrams of potassium'
- $x_2$ represents 'milligrams of vitamin C'
- $x_3$ represents 'milligrams of vitamin B2'

## Step 2: Formulate the objective function
The objective function to minimize is $4.91x_0 + 6.7x_1 + 8.7x_2 + 1.7x_3$.

## 3: Define the constraints
### Resource constraints
- Kidney support index for $x_0$: $4x_0$
- Energy stability index for $x_0$: $20x_0$
- Kidney support index for $x_1$: $6x_1$
- Energy stability index for $x_1$: $16x_1$
- Kidney support index for $x_2$: $4x_2$
- Energy stability index for $x_2$: $10x_2$
- Kidney support index for $x_3$: $9x_3$
- Energy stability index for $x_3$: $7x_3$

### Given constraints
1. $6x_1 + 9x_3 \geq 37$
2. $6x_1 + 4x_2 \geq 45$
3. $4x_2 + 9x_3 \geq 39$
4. $4x_0 + 4x_2 \geq 24$
5. $4x_0 + 6x_1 \geq 39$
6. $6x_1 + 4x_2 + 9x_3 \geq 27$
7. $4x_0 + 4x_2 + 6x_1 \geq 27$
8. $4x_0 + 4x_2 + 9x_3 \geq 27$
9. $6x_1 + 4x_2 + 9x_3 \geq 23$
10. $4x_0 + 6x_1 + 4x_2 \geq 23$
11. $4x_0 + 4x_2 + 9x_3 \geq 23$
12. $6x_1 + 4x_2 + 9x_3 \geq 26$
13. $4x_0 + 6x_1 + 4x_2 \geq 26$
14. $4x_0 + 4x_2 + 9x_3 \geq 26$
15. $4x_0 + 6x_1 + 4x_2 + 9x_3 \geq 26$
16. $10x_2 + 7x_3 \geq 53$
17. $16x_1 + 7x_3 \geq 48$
18. $20x_0 + 16x_1 \geq 27$
19. $20x_0 + 16x_1 + 10x_2 + 7x_3 \geq 27$
20. $6x_2 - 9x_3 \geq 0$
21. $6x_0 - 4x_1 \geq 0$
22. $8x_0 - 10x_2 \geq 0$
23. $4x_0 + 6x_1 \leq 174$
24. $20x_0 + 16x_1 + 10x_2 \leq 90$
25. $20x_0 + 16x_1 + 7x_3 \leq 236$

## 4: Bounds and Integrality constraints
- $x_0, x_1, x_2 \geq 0$ (no upper bound given, but implied by the context)
- $x_3 \geq 0$ and is an integer

## 5: Symbolic Representation
```json
{
    'sym_variables': [
        ('x0', 'milligrams of zinc'), 
        ('x1', 'milligrams of potassium'), 
        ('x2', 'milligrams of vitamin C'), 
        ('x3', 'milligrams of vitamin B2')
    ], 
    'objective_function': '4.91*x0 + 6.7*x1 + 8.7*x2 + 1.7*x3', 
    'constraints': [
        '6*x1 + 9*x3 >= 37',
        '6*x1 + 4*x2 >= 45',
        '4*x2 + 9*x3 >= 39',
        '4*x0 + 4*x2 >= 24',
        '4*x0 + 6*x1 >= 39',
        '6*x1 + 4*x2 + 9*x3 >= 27',
        '4*x0 + 4*x2 + 6*x1 >= 27',
        '4*x0 + 4*x2 + 9*x3 >= 27',
        '6*x1 + 4*x2 + 9*x3 >= 23',
        '4*x0 + 6*x1 + 4*x2 >= 23',
        '4*x0 + 4*x2 + 9*x3 >= 23',
        '6*x1 + 4*x2 + 9*x3 >= 26',
        '4*x0 + 6*x1 + 4*x2 >= 26',
        '4*x0 + 4*x2 + 9*x3 >= 26',
        '4*x0 + 6*x1 + 4*x2 + 9*x3 >= 26',
        '10*x2 + 7*x3 >= 53',
        '16*x1 + 7*x3 >= 48',
        '20*x0 + 16*x1 >= 27',
        '20*x0 + 16*x1 + 10*x2 + 7*x3 >= 27',
        '6*x2 - 9*x3 >= 0',
        '6*x0 - 4*x1 >= 0',
        '8*x0 - 10*x2 >= 0',
        '4*x0 + 6*x1 <= 174',
        '20*x0 + 16*x1 + 10*x2 <= 90',
        '20*x0 + 16*x1 + 7*x3 <= 236'
    ]
}
```

## 6: Gurobi Code
```python
import gurobi

def solve_optimization_problem():
    model = gurobi.Model()

    # Define variables
    x0 = model.addVar(name="x0", lb=0)  # milligrams of zinc
    x1 = model.addVar(name="x1", lb=0)  # milligrams of potassium
    x2 = model.addVar(name="x2", lb=0)  # milligrams of vitamin C
    x3 = model.addVar(name="x3", lb=0, type=gurobi.GRB.INTEGER)  # milligrams of vitamin B2

    # Objective function
    model.setObjective(4.91*x0 + 6.7*x1 + 8.7*x2 + 1.7*x3, gurobi.GRB.MINIMIZE)

    # Constraints
    model.addConstr(6*x1 + 9*x3 >= 37)
    model.addConstr(6*x1 + 4*x2 >= 45)
    model.addConstr(4*x2 + 9*x3 >= 39)
    model.addConstr(4*x0 + 4*x2 >= 24)
    model.addConstr(4*x0 + 6*x1 >= 39)
    model.addConstr(6*x1 + 4*x2 + 9*x3 >= 27)
    model.addConstr(4*x0 + 4*x2 + 6*x1 >= 27)
    model.addConstr(4*x0 + 4*x2 + 9*x3 >= 27)
    model.addConstr(6*x1 + 4*x2 + 9*x3 >= 23)
    model.addConstr(4*x0 + 6*x1 + 4*x2 >= 23)
    model.addConstr(4*x0 + 4*x2 + 9*x3 >= 23)
    model.addConstr(6*x1 + 4*x2 + 9*x3 >= 26)
    model.addConstr(4*x0 + 6*x1 + 4*x2 >= 26)
    model.addConstr(4*x0 + 4*x2 + 9*x3 >= 26)
    model.addConstr(4*x0 + 6*x1 + 4*x2 + 9*x3 >= 26)
    model.addConstr(10*x2 + 7*x3 >= 53)
    model.addConstr(16*x1 + 7*x3 >= 48)
    model.addConstr(20*x0 + 16*x1 >= 27)
    model.addConstr(20*x0 + 16*x1 + 10*x2 + 7*x3 >= 27)
    model.addConstr(6*x2 - 9*x3 >= 0)
    model.addConstr(6*x0 - 4*x1 >= 0)
    model.addConstr(8*x0 - 10*x2 >= 0)
    model.addConstr(4*x0 + 6*x1 <= 174)
    model.addConstr(20*x0 + 16*x1 + 10*x2 <= 90)
    model.addConstr(20*x0 + 16*x1 + 7*x3 <= 236)

    # Optimize
    model.optimize()

    # Print solution
    if model.status == gurobi.GRB.OPTIMAL:
        print("Objective: ", model.objVal)
        print("x0 (milligrams of zinc): ", x0.varValue)
        print("x1 (milligrams of potassium): ", x1.varValue)
        print("x2 (milligrams of vitamin C): ", x2.varValue)
        print("x3 (milligrams of vitamin B2): ", x3.varValue)
    else:
        print("No optimal solution found")

solve_optimization_problem()
```