[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a pyridopyrimidine."}, {"from": "gpt", "value": "[C][C][=C][N][C][=Branch2][Ring1][S][=N][C][=C][Branch1][Branch1][C][Ring1][=Branch1][=O][C][=C][Branch1][=N][C][=Branch1][C][=N][N][Ring1][=Branch2][C][Branch1][C][C][C][C][=Branch1][C][=O][N][C][C][=C][Ring2][Ring1][#Branch1]"}]