Using CCOC(=O)c1ccc(Cl)c(Oc2cc(Br)cnc2NC(=S)NC(=O)c2ccccc2)c1 to produce CCOC(=O)c1ccc(Cl)c(Oc2cc(Br)cnc2NC(N)=S)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.