[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is an X-ray contrast medium containing iohexol in various concentrations, from 140 to 350 milligrams of iodine per milliliter."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][N][Branch1][Branch2][C][C][Branch1][Ring1][C][O][O][C][=C][Branch2][Ring2][=Branch2][C][=Branch2][Ring1][=Branch2][=C][Branch2][Ring1][Ring2][C][=Branch1][Branch1][=C][Ring1][=Branch1][I][C][=Branch1][C][=O][N][C][C][Branch1][Ring1][C][O][O][I][C][=Branch1][C][=O][N][C][C][Branch1][Ring1][C][O][O][I]"}]