[{"from": "human", "value": "Describe this molecule. [C][C][N][C][Branch1][O][C][=C][C][=C][C][=C][Ring1][=Branch1][Ring1][#Branch2][C][C][=C][C][=C][C][=C][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is a benzyltetrahydroisoquinoline. It is a conjugate base of a 1-benzyl-1,2,3,4-tetrahydroisoquinolin-2-ium."}]