Using O=Cc1ccc(F)c(F)c1, Nc1nc2ccccc2n1-c1ccc(F)c(F)c1 to produce Fc1ccc(CNc2nc3ccccc3n2-c2ccc(F)c(F)c2)cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.