[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a 2-monoglyceride in which the acyl group is specified as (9E,12E,15E)-octadecatrienoyl. It is a 2-monoglyceride and a monoacylglycerol 18:3."}, {"from": "gpt", "value": "[C][C][/C][=C][/C][/C][=C][/C][/C][=C][/C][C][C][C][C][C][C][C][=Branch1][C][=O][O][C][Branch1][Ring1][C][O][C][O]"}]