[{"from": "human", "value": "What can you tell me about this molecule? [C][/C][=Branch1][=C][=C][\\C][=C][\\C][=Branch1][#Branch1][=C][\\C][=Branch1][C][=O][O][\\C][/C][=C][/C][=C][Branch1][=C][C][=Branch1][C][=O][C][C][C][Ring1][#Branch1][Branch1][C][C][C][C][O]"}, {"from": "gpt", "value": "The molecule is a retinoid that consists of all-trans-retinoic acid carrying an oxo substituent at position 4 and a hydroxy substituent at position 18. It is a retinoid, an enone, a hydroxy monocarboxylic acid and an oxo monocarboxylic acid. It is functionally related to an all-trans-retinoic acid. It is a conjugate acid of an all-trans-4-oxo-18-hydroxyretinoate."}]