[{"from": "human", "value": "Provide a description of this molecule. [C][C][=Branch2][Ring2][N][=C][/C][=C][/C][=Branch2][Ring2][Ring2][=C][/C][=C][/C][=Branch2][Ring1][N][=C][/C][=C][/C][=C][Branch1][C][\\C][/C][=C][/C][=C][Branch1][C][\\C][/C][=C][/C][=C][Branch1][C][\\C][/C][=Branch1][C][=O][O][/C][/C][C]"}, {"from": "gpt", "value": "The molecule is an apo carotenoid triterpenoid that is 4,4'-diapolycopene in which one of the terminal methyl groups has been replaced by a carboxy group. It has a role as a bacterial metabolite. It is an apo carotenoid triterpenoid and an alpha,beta-unsaturated monocarboxylic acid. It is functionally related to a 4,4'-diapolycopene. It is a conjugate acid of a 4,4'-diapolycopen-4-oate."}]