Using CCCCCCCCC(Oc1ccc(C2=CCCCC2)cc1)C(=O)OCC to produce CCCCCCCCC(Oc1ccc(C2=CCCCC2)cc1)C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.