Using CC(C)(C)c1cc(S)cc(C(C)(C)C)c1O, O=C1CCCC1 to produce CC(C)(C)c1cc(SC2(Sc3cc(C(C)(C)C)c(O)c(C(C)(C)C)c3)CCCC2)cc(C(C)(C)C)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.