[{"from": "human", "value": "Provide a description of this molecule. [C][C][=C][C][=C][C][=Branch1][S][=C][C][=Branch1][O][=C][Ring1][=Branch1][C][=Branch1][Ring2][=N][Ring1][#Branch2][C][O][O]"}, {"from": "gpt", "value": "The molecule is isoquinoline in which the hydrogens at positions 6 and 8 are substituted by hydroxy groups, and those at positions 1 and 3 are substituted by methyl groups."}]