Using OCc1ccsc1, O=c1[nH]nc(-c2cccc(Cl)c2)c2ncccc12 to produce O=c1c2cccnc2c(-c2cccc(Cl)c2)nn1Cc1ccsc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.