Using COc1ccc(-c2ccccc2)c2sc(NC(=S)NC(=O)c3ccccc3)nc12 to produce COc1ccc(-c2ccccc2)c2sc(NC(N)=S)nc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.