InChI=1S/C31H34O12/c1-14(2)4-7-18-21(33)10-6-16-12-20(30(40)41-26(16)18)17-9-11-22(34)19(8-5-15(3)13-32)27(17)42-31-25(37)23(35)24(36)28(43-31)29(38)39/h4-6,9-12,23-25,28,31-37H,7-8,13H2,1-3H3,(H,38,39)/b15-5+