Using Nc1cc(Br)cnc1Nc1ccc(OCc2ccccc2)cc1, COC(OC)OC to produce Brc1cnc2c(c1)ncn2-c1ccc(OCc2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.