[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is a tensyuic acid that is itaconic acid which has been substituted at position 3 by a 3-(methoxycarbonyl)propyl group and 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."}, {"from": "gpt", "value": "[C][O][C][=Branch1][C][=O][C][C][C][C][Branch1][#Branch2][C][=Branch1][C][=C][C][=Branch1][C][=O][O][C][=Branch1][C][=O][O][C]"}]