[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is an O-acyl-L-carnitine in which the acyl group specified is methylmalonyl. It has a role as a metabolite. It is functionally related to a methylmalonic acid."}, {"from": "gpt", "value": "[C][C][Branch1][=Branch1][C][=Branch1][C][=O][O][C][=Branch1][C][=O][O][C@H1][Branch1][#Branch1][C][C][=Branch1][C][=O][O-1][C][N+1][Branch1][C][C][Branch1][C][C][C]"}]