InChI=1S/C33H40O20/c1-9-19(38)21(40)25(44)32(48-9)52-29-23(42)20(39)16(8-34)51-28(29)18-13(36)6-12(35)17-14(37)7-15(50-27(17)18)10-2-4-11(5-3-10)49-33-26(45)22(41)24(43)30(53-33)31(46)47/h2-6,9,15-16,19-26,28-30,32-36,38-45H,7-8H2,1H3,(H,46,47)