Using O=C1OC(Cl)(c2ccccc2)c2ccccc21, Sc1nnnn1-c1ccccc1 to produce O=C1OC(Sc2nnnn2-c2ccccc2)(c2ccccc2)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.