[{"from": "human", "value": "Describe this molecule. [C][O][C][=C][Branch2][Ring1][=Branch1][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][C][=C][N][=C][Branch1][=Branch1][N][=C][Ring1][=Branch1][N][N][O][C]"}, {"from": "gpt", "value": "The molecule is an aminopyrimidine in which the pyrimidine ring carries amino substituents at C-2 and C-4 and a 3,4-dimethoxybenzyl group at C-5. A folic acid antagonist, it is used as a synergist with sulfonamides against the parasitic Eimeria species. It has a role as an antiparasitic agent and a drug allergen."}]