InChI=1S/C28H30O9/c1-23-11-18-25(3)28-19(23)20(30)27(37-28,34-12-16(23)21(31)35-18)15-8-7-13-5-4-6-17(29)24(13,2)14(15)9-10-26(28,33)22(32)36-25/h4,6-7,14-16,18-19,33H,5,8-12H2,1-3H3