InChI=1S/C18H28O13/c1-4-27-9(19)7-18(17(26)29-6-3,8-10(20)28-5-2)31-16-13(23)11(21)12(22)14(30-16)15(24)25/h11-14,16,21-23H,4-8H2,1-3H3,(H,24,25)