Using O=C([O-])[O-], O=c1c2cccc(Br)c2[nH]c(=S)n1-c1ccccn1 to produce CSc1nc2c(Br)cccc2c(=O)n1-c1ccccn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.