InChI=1/C26H26N2O4/c29-25(23-13-7-8-14-24(23)31-21-9-3-1-4-10-21)27-19-20-15-17-28(18-16-20)26(30)32-22-11-5-2-6-12-22/h1-14,20H,15-19H2,(H,27,29)/f/h27H B566A9D715DE9C9F