Using CCCC(Oc1cc(N2C(=O)C3=C(CCCC3)C2=O)ccc1Br)C(C)=O, OCCO to produce CCCC(Oc1cc(N2C(=O)C3=C(CCCC3)C2=O)ccc1Br)C1(C)OCCO1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.