[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is a sphingoid obtained by formal hydrogenation of the C=C bond of hexadecasphingosine. It is a sphingoid and an aminodiol. It is functionally related to a hexadecasphing-4-enine. It is a conjugate base of a hexadecasphinganine(1+)."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][C][C][C][C][C][C@H1][Branch1][#Branch1][C@H1][Branch1][Ring1][C][O][N][O]"}]