Using Cc1c(C(=O)Nc2c(C)n(C)n(C3CCCCC3)c2=O)noc1Br, [Zn+]C1CCCCC1 to produce Cc1c(C(=O)Nc2c(C)n(C)n(C3CCCCC3)c2=O)noc1C1CCCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.