[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a sphingoid derived from degradation of mammalian alpha-linked galactosylceramides by removal of the fatty acid by acid ceramidase."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][C][C][C][C][C][C][C@H1][Branch2][Ring2][C][C@H1][Branch2][Ring1][=N][C@H1][Branch2][Ring1][Branch2][C][O][C@@H1][C@@H1][Branch1][P][C@H1][Branch1][=N][C@H1][Branch1][=Branch2][C@H1][Branch1][Ring2][O][Ring1][=Branch1][C][O][O][O][O][N][O][O]"}]