Using Sc1ccccc1, O=C1c2cccc(Cl)c2C(=O)c2cccc(Cl)c21 to produce O=C1c2cccc(Sc3ccccc3)c2C(=O)c2cccc(Sc3ccccc3)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.