InChI=1S/C23H34N4O2/c1-29-16-10-23(28)25-21-7-5-19(6-8-21)9-11-26-12-14-27(15-13-26)22-4-2-3-20(17-22)18-24/h2-4,17,19,21H,5-16H2,1H3,(H,25,28)/t19-,21-