InChI=1/C13H18N4O4/c1-9(12(19)15-7-11(18)17-14)16-13(20)21-8-10-5-3-2-4-6-10/h2-6,9H,7-8,14H2,1H3,(H,15,19)(H,16,20)(H,17,18 benzyl {2-[(2-hydrazino-2-oxoethyl)amino]-1-methyl-2-oxoethyl}carbamate (non-preferred name)