[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a 1-alkyl-3-methylimidazolium in which the alkyl substituent at C-1 is dodecyl."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][C][C][C][C][N][C][=C][N+1][=Branch1][Ring2][=C][Ring1][Branch1][C]"}]