[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a methyl-branched fatty acid that is heptadecanoic acid (margaric acid) substituted by a methyl group at position 16. It is a branched-chain saturated fatty acid, a long-chain fatty acid and a methyl-branched fatty acid. It is functionally related to a heptadecanoic acid."}, {"from": "gpt", "value": "[C][C][Branch1][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][=Branch1][C][=O][O]"}]