[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is an odorless fine white crystalline solid with a lightly bitter taste. Used as an analgesic medicine."}, {"from": "gpt", "value": "[C][C][O][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][N][C][=Branch1][C][=O][C]"}]