Using CCOC(=S)c1c(Cc2ccccc2)c2ccccc2n1Cc1ccc(Cl)c(Cl)c1 to produce OC(=S)c1c(Cc2ccccc2)c2ccccc2n1Cc1ccc(Cl)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.