InChI=1S/C21H36O11/c1-19(2)10-4-5-20(3,32-19)12(6-10)31-17-15(25)14(24)13(23)11(30-17)7-28-18-16(26)21(27,8-22)9-29-18/h10-18,22-27H,4-9H2,1-3H3