The core skeleton is a six-membered ring containing one nitrogen atom. Numbering begins with the nitrogen as N-1, followed clockwise by C-2, C-3, C-4, C-5, and C-6. A double bond is present between C-3 and C-4, while all other ring bonds are single.

Substituents  
- C-4 is substituted with a 4-fluorophenyl group (para-fluorophenyl).
- N-1 is bonded to a methylene group (-CH2-), which in turn is connected to an imidazole ring. 
   - The imidazole is a five-membered aromatic ring with nitrogens at positions 1 and 3. 
   - The nitrogen at position 3 carries an ethyl substituent (-CH2-CH3). 
   - The methylene linker from N-1 of the core ring connects to the imidazole carbon located between the two nitrogens.

No stereogenic centers or additional substituents are present.