Using N#CCc1ccc2c(c1)OCO2, CCOC(=O)c1cc2c(Cl)nc(N)nc2s1 to produce CCOC(=O)c1cc2c(C(C#N)c3ccc4c(c3)OCO4)nc(N)nc2s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.