InChI=1S/C18H21N5O5/c24-7-11-13(25)14(26)15(27)18(28-11)23-9-22-17-12(23)16(20-8-21-17)19-6-10-4-2-1-3-5-10/h1-5,8-9,11,13-15,18,24-27H,6-7H2,(H,19,20,21)/t11-,13-,14+,15-,18?/m1/s1