[{"from": "human", "value": "Could you provide a description of this molecule? [C][O][C][=C][C][=Branch1][N][=C][C][=Branch1][=Branch1][=C][Ring1][=Branch1][O][C][O][C][/C][=C][/C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a methoxycinnamic acid with three methoxy substituents at the 3-, 4- and 5-positions. It has a role as an allergen. It is a conjugate acid of a 3,4,5-trimethoxycinnamate."}]