InChI=1S/C18H26O15/c1-5(19)29-12-8(32-17(27)15(31-7(3)21)14(12)30-6(2)20)4-28-18-11(24)9(22)10(23)13(33-18)16(25)26/h8-15,17-18,22-24,27H,4H2,1-3H3,(H,25,26)