InChI=1S/C21H32O9/c1-11(8-14(22)9-12(2)13-4-6-21(3,28)7-5-13)10-29-20-17(25)15(23)16(24)18(30-20)19(26)27/h4,6,8,12-13,15-18,20,23-25,28H,5,7,9-10H2,1-3H3,(H,26,27)