Using Nc1nccn2c(=S)[nH]c(-c3ccc4ccc(-c5ccccc5)nc4c3F)c12, Brc1nncs1 to produce Nc1nccn2c(Sc3nncs3)nc(-c3ccc4ccc(-c5ccccc5)nc4c3F)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.