[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is an N-acyl-15-methylhexadecaphytosphingosine in which the ceramide N-acyl group is apecified as hexadecanoyl (palmitoyl). It is functionally related to a 15-methylhexadecaphytosphingosine."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][=Branch1][C][=O][N][C@@H1][Branch1][Ring1][C][O][C@@H1][Branch2][Ring1][Ring2][C@@H1][Branch1][S][C][C][C][C][C][C][C][C][C][C][C][Branch1][C][C][C][O][O]"}]