[{"from": "human", "value": "What can you tell me about this molecule? [C][C@H1][Branch1][#Branch1][C][C][=Branch1][C][=O][O][C@H1][C][C][C@@H1][C@@][Ring1][Branch1][Branch2][Ring1][Branch2][C][C][C][/C][\\-Ring1][=Branch1][=C][\\C][=C][\\C][C@H1][Branch1][#Branch2][C][C@@H1][Branch1][Branch1][C][/-Ring1][=Branch1][=C][O][O][C]"}, {"from": "gpt", "value": "The molecule is a hydroxycalciol that is calcidiol in which the pro-S hydrogen of calcidiol is replaced by a hydroxy group and the C-23/C-27 unit is replaced by a carboxy group. It is a conjugate acid of a calcitroate."}]