[{"from": "human", "value": "Provide a description of this molecule. [C][C][C][Branch1][C][C][C][C][C][C][C][C][C][C][/C][=C][/C@H1][Branch1][#Branch1][C@H1][Branch1][Ring1][C][O][N][O]"}, {"from": "gpt", "value": "The molecule is a sphingoid that is hexadecasphingosine substituted at position 14 by a methyl group. It is an aminodiol and a sphingoid. It is a conjugate base of a 14-methylhexadecasphingosine(1+)."}]