InChI=1S/C21H37O9P/c1-2-3-9-13-19-21(30-19)18(23)12-10-7-5-4-6-8-11-14-20(24)28-15-17(22)16-29-31(25,26)27/h3,9-10,12,17-19,21-23H,2,4-8,11,13-16H2,1H3,(H2,25,26,27)/b9-3-,12-10+