[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][Branch2][Ring1][=Branch1][C][N][C][=C][C][=C][C][=C][Ring1][=Branch1][S][C][=C][C][=C][C][=C][Ring1][=Branch1][Ring1][=C][NH1+1][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule is an ammonium ion that results from the protonation of the dimethyl-substituted nitrogen of promethazine. It is a conjugate acid of a promethazine."}]