Using N=C(N)N, COC(OC)c1ccc(C(=O)C(=CN(C)C)c2ccccc2)cc1 to produce COC(OC)c1ccc(-c2nc(N)ncc2-c2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.