[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a tensyuic acid that is itaconic acid which has been substituted at position 3 by a 7-(methoxycarbonyl)heptanyl group. The (+)-isomer, isolated from Aspergillus niger FKI-2342. It has a role as an Aspergillus metabolite. It is a tensyuic acid, a methyl ester and a dicarboxylic acid."}, {"from": "gpt", "value": "[C][O][C][=Branch1][C][=O][C][C][C][C][C][C][C][C][Branch1][#Branch2][C][=Branch1][C][=C][C][=Branch1][C][=O][O][C][=Branch1][C][=O][O]"}]