[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a quaternary ammonium ion obtained by methylation of N,N-dimethylaniline."}, {"from": "gpt", "value": "[C][N+1][Branch1][C][C][Branch1][C][C][C][=C][C][=C][C][=C][Ring1][=Branch1]"}]