Using FC(F)(F)c1ccc(Nc2ncnc3c2CNCC3)cc1, OB(O)c1ccccc1 to produce FC(F)(F)c1ccc(Nc2ncnc3c2CN(c2ccccc2)CC3)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.