The molecule has a pyrimidine core, a six-membered aromatic ring with two nitrogens in a meta arrangement, numbered as N1-C2-N3-C4-C5-C6.

The ring substituents are as follows:

- C2 bears a methyl group (-CH3).
- C4 carries a bromine atom (-Br).
- C5 is attached to a side chain (see below).
- C6 bears a trifluoromethyl group (-CF3), where the ring carbon is directly bonded to a carbon carrying three fluorine atoms.

The side chain at C5 consists of a single bond to an S-configured stereogenic carbon. This chiral carbon is substituted with a methyl group (-CH3) and an ethyl ester. Specifically, the chiral carbon bonds to a carbonyl carbon (a carbond double bonded to an oxygen, denoted as -C(=O)-), which is further bonded to an ethoxy group (-O-CH2-CH3).