Starts from an aromatic five-membered ring containing two adjacent nitrogens position.

Numbering clockwise begins at C-1, which is defined as the ring carbon carrying the longest side chain, followed by C-2, C-3, N-4, and N-5, returning to C-1.

Substituents
1. C-1 bears a branched side chain:
   - The ring carbon is bonded to a methylene (-CH2-).  
   - That methylene is bonded to a secondary amine nitrogen (-NH-).  
   - The nitrogen is bonded to another methylene (-CH2-).  
   - This second methylene is attached to a tertiary carbon (C*) that bears:  
     a) one hydroxyl group (-OH),  
     b) one cyclopropyl ring (three-carbon saturated ring attached through one of its ring carbons),  
     c) one hydrogen.  

2. N-4 is directly attached to a cyclohexyl group (a six-membered saturated carbocycle).