Using C[NH+](C)c1cc(Br)ccc1CCl, Cc1cc(=O)[nH]c(=S)[nH]1 to produce Cc1cc(=O)[nH]c(SCc2ccc(Br)cc2N(C)C)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.