The core is a six-membered heterocycle (partially hydrogenated piperidine) numbered 1 to 6 clockwise, with atom 6 as nitrogen. There is a single C=C double bond between atoms 1 and 2; all other ring bonds are single. The nitrogen (atom 6) bears a methyl group.
The other substituents on the ring:
- C1 is bonded to a benzene ring that carries fluoro and bromo substituents at both ortho positions relative to the attachment point (i.e., 2,6-disubstituted with F and Br).
- C2 is bonded to an unsubstituted phenyl ring.
- C4 bears an iodine atom.
- C5 is sp2-hybridized and bears an exocyclic side chain: C5 forms an Z-configured double bond to an external carbon, and that external carbon is further bonded to an ethyl group (-CH2-CH3).