1. Begin with a saturated six-membered heterocycle (piperidine). Number it clockwise with the ring nitrogen as position 1.

   - N-1 carries a methyl group.  
   - C-3 bears a primary amino group (-NH2).
   - C-5 is the point of attachment to an aromatic bicyclic system described below. All other ring positions are saturated carbons bearing hydrogens.

2. The fused ring system attached to C-5 of the piperidine is an imidazopyridine ring system.
   - It consists of a pyridine ring (six-membered aromatic, one nitrogen) fused to an imidazole ring (five-membered aromatic with two nitrogens in a 1,3- or "meta" relationship). 
   - One imidazole nitrogen is the fusion atom shared by both rings, so the other imidazole nitrogen lies adjacent to the fusion junctions.
   - The imidazole carbon that is not adjacent to either junction carries a methyl substituent.
   - The linkage back to the piperidine ring occurs at a pyridine carbon that is para to the shared nitrogen.