The molecule has a cyclohexane core (a fully saturated six-membered carbon ring).

One carbon of the cyclohexane bears two methyl groups (gem-dimethyl substitution). At the carbon para to this gem-dimethyl carbon, the ring carries a secondary amine group (-NH-).

This nitrogen is bonded to a stereogenic carbon (C*, R-configured), which is part of a six-membered heterocycle composed of five carbons and one nitrogen. The nitrogen in this ring is positioned para to C*. This heterocycle is fully saturated (all single bonds), except at the fusion junction with an imidazole ring.

The imidazole is a five-membered aromatic ring with two nitrogens in a meta relationship. The fusion occurs between the heterocycle nitrogen (original hydrogen bearing) and its adjacent carbon, while the second imidazole nitrogen lies adjacent to the fusion junctions.