Using CCCCOC(=O)C1(CCCCC(=O)CCCCC2(C(=O)OCCCC)CCCC2)CCCC1 to produce O=C(CCCCC1(C(=O)O)CCCC1)CCCCC1(C(=O)O)CCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.