InChI=1S/C20H18O8P2/c21-20(29(22,23)24,30(25,26)27)12-13-5-3-6-14(11-13)15-8-4-9-17-16-7-1-2-10-18(16)28-19(15)17/h1-11,21H,12H2,(H2,22,23,24)(H2,25,26,27)