InChI=1S/C20H20O7P2/c21-20(28(22,23)24,29(25,26)27)14-15-5-4-8-19(13-15)18-11-9-17(10-12-18)16-6-2-1-3-7-16/h1-13,21H,14H2,(H2,22,23,24)(H2,25,26,27)