Using O=C([O-])O, NCC1(c2ccc(Br)cc2)c2ccccc2-c2[nH+]ccn21 to produce O=C1CCCCN1CC1(c2ccc(Br)cc2)c2ccccc2-c2nccn21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.