InChI=1/C19H25N5O4/c1-2-19(13-8-4-3-5-9-13)16(26)24(18(28)21-19)12-15(25)22-23-17(27)20-14-10-6-7-11-14/h3-5,8-9,14H,2,6-7,10-12H2,1H3,(H,21,28)(H,22,25)(H2,20,23,27)/t19-/m0/s1/f/h20-23H 48CD41962DF7720B