InChI=1S/C27H28O14/c1-11(28)36-10-21-25(37-12(2)29)23(35)26(38-13(3)30)27(41-21)40-19-7-5-15-17(32)9-20(39-24(15)22(19)34)14-4-6-16(31)18(33)8-14/h4-8,20-21,23,25-27,31,33-35H,9-10H2,1-3H3