Using CC(C)(C)OC(=O)NCCCBr, O=C(NC1CCNCC1)OCc1ccccc1 to produce CC(C)(C)OC(=O)NCCCN1CCC(NC(=O)OCc2ccccc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.