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