Using Cc1nc2c(cc1Br)C[C@@H]1CN(C(=O)OC(C)(C)C)C[C@@H](C)N21, CC(C)OB(OC(C)C)OC(C)C to produce Cc1nc2c(cc1O)C[C@@H]1CN(C(=O)OC(C)(C)C)C[C@@H](C)N21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.