Using CC(=O)OC(C)=O, COc1cc2ncnc(N3CCc4cc(N)ccc43)c2cc1OC to produce COc1cc2ncnc(N3CCc4cc(NC=O)ccc43)c2cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.