Using CC1(C)OB(c2ccc(NC3CCOCC3)cc2)OC1(C)C, CC(C)CCn1ccc(Br)cc1=O to produce CC(C)CCn1ccc(-c2ccc(NC3CCOCC3)cc2)cc1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.