Using OC1CCCC(c2ccc(Cl)cc2)c2cc(-c3ccncc3)sc21 to produce O=C1CCCC(c2ccc(Cl)cc2)c2cc(-c3ccncc3)sc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.