InChI=1S/C18H23N5O5/c1-21-16-15(17(27)22(2)18(21)28)23(10-20-16)5-3-4-19-9-14(26)11-6-12(24)8-13(25)7-11/h6-8,10,14,19,24-26H,3-5,9H2,1-2H3