[{"from": "human", "value": "What can you tell me about this molecule? [C][O][C][=Branch1][C][=O][C][C][C][C][C][C][Branch1][#Branch2][C][=Branch1][C][=C][C][=Branch1][C][=O][O][C][=Branch1][C][=O][O][C]"}, {"from": "gpt", "value": "The molecule is a tensyuic acid that is tensyuic acid B in which the non-conjugated carboxy group has been converted to the corresponding methyl ester. The (+)-isomer, isolated from Aspergillus niger FKI-2342. It has a role as an Aspergillus metabolite. It is a tensyuic acid and a methyl ester. It is functionally related to a tensyuic acid B."}]