[{"from": "human", "value": "Provide a description of this molecule. [C][C][N][C][=Branch1][C][=O][C][=C][Branch1][=Branch1][N][C][Ring1][#Branch1][=S][N][=C][C][C][C][C][C][Ring1][=Branch1][=C][Ring1][=N]"}, {"from": "gpt", "value": "The molecule is a pyridopyrimidine."}]