[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is the trianion of phytyl diphosphate. It is a conjugate base of an (E)-3,7,11,15-tetramethylhexadec-2-en-1-yl diphosphate."}, {"from": "gpt", "value": "[C][C][Branch1][C][C][C][C][C][C][Branch1][C][C][C][C][C][C][Branch1][C][C][C][C][C][/C][=Branch2][Ring1][Ring2][=C][/C][O][P][=Branch1][C][=O][Branch1][C][O-1][O][P][=Branch1][C][=O][Branch1][C][O-1][O-1][/C]"}]