Using C=CC(C)(CCO)C(=O)N[C@H](C(=O)N[C@@H](C)C(=O)N1CCC[C@@H](C(=O)N[C@H](C)c2ccc3ccc(Br)cc3n2)N1)C(C)C to produce C=CC1(C)CCN([C@H](C(=O)N[C@@H](C)C(=O)N2CCC[C@@H](C(=O)N[C@H](C)c3ccc4ccc(Br)cc4n3)N2)C(C)C)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.