InChI=1/C21H21N3O4/c25-20(13-19(21(26)27)22-14-18-7-4-12-28-18)24-17-10-8-16(9-11-17)23-15-5-2-1-3-6-15/h1-12,19,22-23H,13-14H2,(H,24,25)(H,26,27)/t19-/m1/s1/f/h22,24H 26368C3DE29261ED