[{"from": "human", "value": "Could you provide a description of this molecule? [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][Branch2][Ring1][Branch2][C][O][C@@H1][C@@H1][Branch1][P][C@H1][Branch1][=N][C@H1][Branch1][=Branch2][C@H1][Branch1][Ring2][O][Ring1][=Branch1][C][O][O][O][O][C@@H1][Branch1][P][C@@H1][Branch1][=N][C][C][C][C][C][=C][C][=C][C][=C][Ring1][=Branch1][O][O]"}, {"from": "gpt", "value": "The molecule is an alpha-galactosylceramide in which the nitrogen carries a hexacosanamido group and C-4 carries in addition to a hydroxy function a 4-phenylbutyl group. Essentially a phytosphingosine analogue with a truncated lipid chain terminating in a benzene ring, it has been used in investigations on the binding affinity of glycolipids to CD1d molecules. It is functionally related to an alpha-D-galactose."}]