Using COC(=O)C(C)Cc1cc(C(C)(C)C)c(O)c(C(C)(C)C)c1, CCCCCCCCCCCCO to produce CCCCCCCCCCCCOC(=O)C(C)Cc1cc(C(C)(C)C)c(O)c(C(C)(C)C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.