[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a N-(omega-hydroxy-ultra-long chain fatty acyl)sphingosine."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][C][C][C][C][C][/C][=C][/C@H1][Branch2][Ring2][O][C@H1][Branch1][Ring1][C][O][N][C][=Branch1][C][=O][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][O][O]"}]