Using CCOC(=O)c1cc(C(=O)c2ccccc2Cl)c(NC(=O)CCl)s1, N to produce CCOC(=O)c1cc2c(s1)NC(=O)CN=C2c1ccccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.