Using COC(=O)C1C(c2ccc(F)c(C)c2)=CC2(CC1(C)C)SCCCS2 to produce Cc1cc(C2=CC3(CC(C)(C)C2CO)SCCCS3)ccc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.