[{"from": "human", "value": "Provide a brief overview of this molecule. [C][=C][N][=C][Branch1][=Branch1][N][=C][Ring1][=Branch1][N][N]"}, {"from": "gpt", "value": "The molecule is an aminopyrimidine in which a pyrimidine nucleus is substituted with amino groups at C-2 and C-4."}]