InChI=1S/C29H28N2O7/c1-20-26(30-28(37-20)22-6-4-3-5-7-22)16-17-36-24-10-8-21(9-11-24)18-31(19-27(32)33)29(34)38-25-14-12-23(35-2)13-15-25/h3-15H,16-19H2,1-2H3,(H,32,33)