Using CCOC(=O)CS, Clc1ccc(CNc2nc(Cl)cc(Cl)n2)cc1 to produce CCOC(=O)CSc1cc(Cl)nc(NCc2ccc(Cl)cc2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.