Using C=CCN, CC(OC(=O)C(Br)CCCCBr)C(=O)N1CCCC1 to produce C=CCN1CCCCC1C(=O)O[C@@H](C)C(=O)N1CCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.