Using O=C1CCCN1, CCOC(=O)Cc1cccc(Oc2ccc(Br)cc2CBr)c1 to produce CCOC(=O)Cc1cccc(Oc2ccc(Br)cc2CN2CCCC2=O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.