[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is a cationic sphingoid that is the conjugate acid of (4R)-hydroxysphing-(8Z)-enine, obtained by protonation of the primary amino function; major species at pH 7.3."}, {"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][NH3+1][O][O]"}]