InChI=1S/C21H36O11/c1-5-20(4)7-6-12(19(2,3)32-20)31-17-15(25)14(24)13(23)11(30-17)8-28-18-16(26)21(27,9-22)10-29-18/h5,11-18,22-27H,1,6-10H2,2-4H3