Using O=C(OCC1CCN2CCCCC2C1)c1c[nH]c2ccccc12, CC(=O)CBr to produce CC(=O)Cn1cc(C(=O)OCC2CCN3CCCCC3C2)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.