InChI=1S/C31H34O9/c1-35-25-8-5-17(12-27(25)37-3)9-20-16-39-31(34)21(20)10-18-11-22-23(15-32)29(40-30(22)28(13-18)38-4)19-6-7-24(33)26(14-19)36-2/h5-8,11-14,20-21,23,29,32-33H,9-10,15-16H2,1-4H3