[{"from": "human", "value": "Provide a description of 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][Branch1][S][/C][=C][/C][C][C][C][C][C][C][C][/C][=C][\\C][C][C][O]"}, {"from": "gpt", "value": "The molecule is a N-acyl-(4E,14Z)-sphingadienine in which the N-acyl group is specified as octadecanoyl. It has a role as a Caenorhabditis elegans metabolite. It is a N-acyl-(4E,14Z)-sphingadienine and a N-stearoyl-sphingoid base. It is functionally related to an octadecanoic acid."}]