Using O=C(OCc1ccccc1)N1CCC(N2CCNC2=O)CC1, BrCCOC1CCCCO1 to produce O=C(OCc1ccccc1)N1CCC(N2CCN(CCOC3CCCCO3)C2=O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.