Using CCC=C(CCC)c1cc(C)nn2c(-c3sc4ccc(F)cc4c3C)c(C)nc12 to produce CCCC(CCC)c1cc(C)nn2c(-c3sc4ccc(F)cc4c3C)c(C)nc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.