Using COC(CN)OC, COC(=N)c1ccc(-c2ccc(C(C)=O)cc2)o1 to produce COC(CN=C(N)c1ccc(-c2ccc(C(C)=O)cc2)o1)OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.