1. Start with a benzene ring. Assign positions "a" and "b" in a para arrangement to carry substituents.
   - At position "a", attach an isobutyl group (CH2-CH(CH3)-CH3).
2. Position "b" is connected to a chiral carbon (C1) with an R configuration. C1 is part of a seven-membered ring (Ring A) that includes two nitrogen atoms and five carbon atoms. Number this ring counterclockwise, starting from C1, followed by N2, C3, C4, N5, C6, and C7. Specifically:
   - There is a double bond between C6 and C7, which are shared with another six-carbon ring (Ring B).
   - In Ring B, the carbon adjacent to C7 froms an external double bond with an oxygen, and at the meta position relative to C6 (which is also para to C7), there are two methyl substituents.
   - C3 and C4 are shared with another benzene ring (Ring C), which has no additional substituents.
