Using CCN=C=NCCCN(C)C, COc1cc(-c2cccc3cc([C@H](C)Nc4nc(N)ncc4C(=O)O)n(-c4ccccc4)c(=O)c23)ccn1 to produce CN(C)C(=O)c1cncnc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.