InChI=1S/C31H35NO8/c1-32-17-19-38-23-14-12-22(13-15-23)25(21-10-6-3-7-11-21)24(20-8-4-2-5-9-20)16-18-39-31-28(35)26(33)27(34)29(40-31)30(36)37/h2-15,26-29,31-35H,16-19H2,1H3,(H,36,37)/b25-24+