The molecule contains two fused components: a benzene ring (Ring A) and Ring B, which is a six-membered saturated ring with two adjacent nitrogens. Ring A is labeled RingA-C1 through RingA-C6, and Ring B is labeled RingB-N1, RingB-N2, RingB-C3, RingB-C4, RingB-C5, and RingB-C6. The two rings are connected through RingA-C1 and RingB-C6.

Substitution pattern on these two rings:

1. On Ring A (benzene):
   - RingA-C3 carries a methyl group (-CH3).
   - RingA-C4 carries a methoxy group (-OCH3).

2. On Ring B (pyridazine):
   - RingB-N2 is substituted with a 3-methylbutyl chain (a four-carbon straight chain with a methyl substituent on the third carbon).
   - RingB-C3 is double bonded to an oxygen, forming an exocyclic carbonyl group (C=O).
   - RingB-C4 carries an amino group (-NH2).

All remaining positions on both rings are unsubstituted. The molecule has no chiral centers and no stereogenic double bonds.