InChI=1S/C27H36O20/c28-6-12-16(33)23(39)27(8-29,46-12)47-26-21(38)17(34)15(32)13(44-26)7-42-14(31)4-2-9-1-3-10(30)11(5-9)43-25-20(37)18(35)19(36)22(45-25)24(40)41/h1-5,12-13,15-23,25-26,28-30,32-39H,6-8H2,(H,40,41)/b4-2+