InChI=1S/C33H42O20/c1-10-3-13(36)20-14(48-10)5-11-4-12(46-2)6-15(19(11)24(20)40)49-32-27(43)26(42)22(38)18(52-32)9-47-31-29(45)30(23(39)17(8-35)50-31)53-33-28(44)25(41)21(37)16(7-34)51-33/h3-6,16-18,21-23,25-35,37-45H,7-9H2,1-2H3