Using CCOC(=O)c1ccc(-c2ccc(OCCCCCCCCCCOC(C)=O)cc2)cc1 to produce O=C(O)c1ccc(-c2ccc(OCCCCCCCCCCO)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.