Using CCC(=O)N(c1ccccc1)C1(C(=O)OC)CCNCC1, OCCBr to produce CCC(=O)N(c1ccccc1)C1(C(=O)OC)CCN(CCO)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.