Using CCOC(=O)c1cc(Oc2ccc(S(C)(=O)=O)cc2)c2cc(CBr)oc2c1, O=C1CCCN1 to produce CCOC(=O)c1cc(Oc2ccc(S(C)(=O)=O)cc2)c2cc(CN3CCCC3=O)oc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.