[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. 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."}, {"from": "gpt", "value": "[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]"}]