[{"from": "human", "value": "Could you provide a description of this molecule? [C][C@@H1][Branch2][Ring2][Ring1][C][C][C][C@@H1][Branch1][C][C][C][C][C][/C][=Branch2][Ring1][Ring2][=C][/C][O][P][=Branch1][C][=O][Branch1][C][O][O][P][=Branch1][C][=O][Branch1][C][O][O][/C][C][C][C][C][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule is (E)-3,7,11,15-tetramethylhexadec-2-en-1-yl diphosphate in which both stereocentres have (R)-configuration. It is functionally related to a phytol. It is a conjugate acid of a phytyl diphosphate(3-)."}]