[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is the cationic form of a C7 cyanine dye having 3,3-dimethyl-1-octadecylindoleinine units at each end. It has a role as a fluorochrome. It is a cyanine dye and an indolium ion."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][N][C][=C][C][=C][C][=C][Ring1][=Branch1][C][Branch2][Ring2][S][/C][\\-Ring1][=Branch2][=C][\\C][=C][\\C][=C][\\C][=C][\\C][=N+1][Branch1][S][C][=C][C][=C][C][=C][Ring1][=Branch1][C][Ring1][=Branch2][Branch1][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][Branch1][C][C][C]"}]