[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is an iminium ion that is the 6-dimethylamino derivative of N,N-dimethyl-9-phenyl-3H-xanthen-3-iminium. Used in the form of its chloride salt as a red-orange fluorescent dye."}, {"from": "gpt", "value": "[C][N][Branch1][C][C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][=Branch2][Ring1][Ring1][=C][C][=C][C][=Branch1][=Branch1][=N+1][Branch1][C][C][C][C][=C][Ring1][=Branch2][O][Ring1][#C][C][=C][C][=C][C][=C][Ring1][=Branch1]"}]