InChI=1S/C20H20O8P2/c21-20(29(22,23)24,30(25,26)27)14-28-19-11-5-10-18(13-19)17-9-4-8-16(12-17)15-6-2-1-3-7-15/h1-13,21H,14H2,(H2,22,23,24)(H2,25,26,27)