InChI=1/C19H25N5O4/c1-12-5-6-13(15(20)25)11-14(12)22-17(27)21-9-4-10-24-16(26)19(23-18(24)28)7-2-3-8-19/h5-6,11H,2-4,7-10H2,1H3,(H2,20,25)(H,23,28)(H2,21,22,27)/f/h21-23H,20H2 894C87D4B7A922EA