[{"from": "human", "value": "What can you tell me about this molecule? [C][C@@H1][Branch2][Ring1][N][C@@H1][Branch2][Ring1][#Branch1][C@H1][C][N][=C][C][=Branch1][Ring2][=N][Ring1][=Branch1][C][=Branch1][C][=O][N][C][=Branch1][Ring2][=N][Ring1][Branch2][N][O][O]"}, {"from": "gpt", "value": "The molecule is a 6,7-dihydrobiopterin that has R configuration at position 6 and in which the 1,2-dihydroxypropyl substituent has 1R,2S configuration."}]