Using O=c1[nH]c2cc(-c3ccccc3)sc2c(=O)o1, BrCc1ccccc1 to produce O=c1oc(=O)n(Cc2ccccc2)c2cc(-c3ccccc3)sc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.