Using [O-]C(=S)c1ccccc1, O=C(CCNC(=O)OCc1ccccc1)NCCBr to produce O=C(CCNC(=O)OCc1ccccc1)NCCSC(=O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.