Using O=P(Br)(Br)Br, O=c1[nH]c2ccc(OCc3ccccc3)nc2n1-c1ccccc1F to produce Fc1ccccc1-n1c(Br)nc2ccc(OCc3ccccc3)nc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.