Using O=Cc1ccc(B(O)O)cc1, Brc1cnc2c(-c3ccccc3)cnn2c1 to produce O=Cc1ccc(-c2cnc3c(-c4ccccc4)cnn3c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.