InChI=1S/C31H36O11/c1-14(2)4-7-18-21(33)9-8-17-20-13-39-23-11-22(40-31-26(36)24(34)25(35)29(42-31)30(37)38)16(6-5-15(3)12-32)10-19(23)28(20)41-27(17)18/h4-5,8-11,20,24-26,28-29,31-36H,6-7,12-13H2,1-3H3,(H,37,38)/b15-5+