[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a phytoceramide in which the ceramide N-acyl group is specified as octacosanoyl. It is a N-acylphytosphingosine and a N-(ultra-long-chain-acyl)-sphingoid base."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][C][C][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][Branch2][Ring1][Ring1][C@@H1][Branch1][#C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][O][O]"}]