[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a 1-octadecyl-2-methylglycero-3-phosphocholine that is the (S)-enantiomer of edelfosine."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][O][C][C@@H1][Branch2][Ring1][Branch1][C][O][P][=Branch1][C][=O][Branch1][C][O-1][O][C][C][N+1][Branch1][C][C][Branch1][C][C][C][O][C]"}]