Using COc1cc(C)c(C(=O)CCCCCCCCCCOC(C)=O)c(O)c1OC to produce COc1cc(C)c(C(=O)CCCCCCCCCCO)c(O)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.