[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is a sphingoid consisting of (8E)-sphing-8-enine bearing an additional (R)-hydroxy substituent at the 4-position. It is functionally related to a sphing-8-enine. It is a conjugate acid of a 4-hydroxysphing-8-enine(1+)."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][C][/C][=C][/C][C][C][C@H1][Branch1][O][C@H1][Branch1][#Branch1][C@H1][Branch1][Ring1][C][O][N][O][O]"}]