[{"from": "human", "value": "Please give me some details about this molecule. [C][C][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][Branch1][C@@H1][Branch1][P][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][O][O]"}, {"from": "gpt", "value": "The molecule is a ceramide that is the N-stearoyl (octadecanoyl) derivative of 4-hydroxyeicosasphinganine. It is a C20 phytoceramide and a N-stearoyl-sphingoid base."}]