Using CC(C)(C)OC(=O)CCC(=O)OC(C)(C)C, O=C1CCCCCCCCCCC1 to produce CC(C)(C)OC(=O)C(CC(=O)O)C1=CCCCCCCCCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.