Using C=CCBr, O=C(O)c1ccccc1OCCN1CCC(c2cn(CCO)c3ccccc23)CC1 to produce C=CCOCCn1cc(C2CCN(CCOc3ccccc3C(=O)O)CC2)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.