Consider the molecule as a naphthalene ring, consisting of two fused benzene rings. Number the eight peripheral carbons consecutively in a clockwise direction, starting from any carbon adjacent to the shared atoms, labeling them C1 through C8.
The naphthalene ring features three substituents:
- Nitro groups (-[N+]([O-])=O) attached at positions C1 and C5.
- An amino group (-NH2) attached at position C2.
