Using CCOC(=O)COc1c(Cl)cc(NC(=S)Nc2ccc(NC(C)=O)cc2)cc1Cl to produce CC(=O)Nc1ccc(NC(=S)Nc2cc(Cl)c(OCC(=O)O)c(Cl)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.