1. The molecule's main framework is a saturated five-membered ring containing one nitrogen. Number this ring so that the nitrogen is position 1, then proceed around to C2, C3, C4, and C5.
2. Substituents on this ring:
   - N1 bears a methylene substituent that connects to a fused bicyclic system (described below).
   - C2 carries a methyl group.
   - C4 carries a -CH2-NH2 side chain.
3. A 2,3-dihydroindole (a benzene Ring B fused with a five membered heterocyclic Ring A) is attached to the methylene.
   - Ring A is a five-membered ring (N1', C2', C3', C4', and C5'),
   - Ring B is a phenyl ring (C4', C5', C6', C7', C8', and C9'), sharing two carbon atoms with Ring A.
   - N1' is substituted with a methyl group.
   - The methylene substituent from the main framework (attached to N1 of the core ring) connects to the dihydroindole at C8'.
