Using CC1(C)[C@H](C(=O)O)[C@@H]1C=C(Br)Br, ClCc1nsc(Oc2ccccc2)n1 to produce CC1(C)[C@H](C(=O)OCc2nsc(Oc3ccccc3)n2)[C@@H]1C=C(Br)Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.