InChI=1/C19H21N5O5/c20-16-8-3-12(10-17(16)24(27)28)18(25)22-13-4-6-14(7-5-13)23-19(26)21-11-15-2-1-9-29-15/h3-8,10,15H,1-2,9,11,20H2,(H,22,25)(H2,21,23,26)/t15-/m1/s1/f/h21-23H 2A74422EDFF53F7F