InChI=1/C22H26N2O4/c1-17-7-3-4-8-20(17)27-16-22(26)28-15-21(25)23-18-9-11-19(12-10-18)24-13-5-2-6-14-24/h3-4,7-12H,2,5-6,13-16H2,1H3,(H,23,25)/f/h23H 1A51EE0AAFAE5DB4