------
## 最终结论
```python
def find_max(words):
    max_unique_count = 0
    result = ""
    
    for word in words:
        unique_count = len(set(word))
        
        if unique_count > max_unique_count or (unique_count == max_unique_count and word < result):
            max_unique_count = unique_count
            result = word
    
    return result
```