InChI=1S/C15H18N4O3/c16-12(6-10-4-2-1-3-5-10)14(20)19-13(15(21)22)7-11-8-17-9-18-11/h1-5,8-9,12-13H,6-7,16H2,(H,17,18)(H,19,20)(H,21,22)/t12-,13-/m0/s1