Using COS(=O)(=O)OC, CCCCCn1c(=O)[nH]c(=S)c2[nH]c(C(F)(F)F)nc21 to produce CCCCCn1c(=O)nc(SC)c2[nH]c(C(F)(F)F)nc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.