InChI=1S/C27H28O14/c1-8-20(33)23(36)26(41-27-24(37)22(35)19(32)9(2)39-27)25(38-8)18-14(31)7-16-17(21(18)34)13(30)6-15(40-16)10-3-4-11(28)12(29)5-10/h3-9,19,22-29,31-32,34-37H,1-2H3