InChI=1S/C31H34O13/c1-14(13-32)4-3-6-31(2)7-5-15-8-17(18(34)11-20(15)44-31)21-12-19(35)24-22(41-21)9-16(33)10-23(24)42-30-27(38)25(36)26(37)28(43-30)29(39)40/h4-5,7-11,21,25-28,30,32-34,36-38H,3,6,12-13H2,1-2H3,(H,39,40)/b14-4+