InChI=1S/C21H39O9P/c1-14(2)7-5-8-15(3)9-6-10-16(4)11-12-28-31(26,27)30-21-20(25)19(24)18(23)17(13-22)29-21/h7,9,16-25H,5-6,8,10-13H2,1-4H3,(H,26,27)/b15-9-/t16?,17-,18-,19+,20-,21+/m1/s1