Using Cc1cccnc1Nc1ccc(Oc2ncccc2Br)cc1, CC1(C)OB(C2=CCOCC2)OC1(C)C to produce Cc1cccnc1Nc1ccc(Oc2ncccc2C2=CCOCC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.