Using O=C(Nc1cccc(-c2nncn2C2CC2)c1)c1cc(Br)ccn1, OB(O)c1cccnc1 to produce O=C(Nc1cccc(-c2nncn2C2CC2)c1)c1cc(-c2cccnc2)ccn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.