Using CC(=O)OCCBr, Cc1ccc(-c2c(O)nn(Cc3ccccc3)c2N)cc1 to produce CC(=O)OCCOc1nn(Cc2ccccc2)c(N)c1-c1ccc(C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.