Using O=C(OCc1ccccc1)N1C2CCC1(C(=O)Cl)CC2, NC(=O)c1sc(Br)cc1N to produce O=C(OCc1ccccc1)N1C2CCC1(c1nc3cc(Br)sc3c(=O)[nH]1)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.