InChI=1S/C27H32N2O8/c1-18-11-13-20-7-4-9-23(31)26(20)27(34)37-21(17-25(33)36-19(2)12-14-22(18)30)8-5-15-28-24(32)10-6-16-29-35-3/h4-7,9-12,14-16,19,21-22,30-31H,8,13,17H2,1-3H3,(H,28,32)/b10-6-,14-12+,15-5+,18-11-,29-16-