Using CCCCCCCCCC(Oc1ccc(C2=CCCCCC2)cc1)C(=O)OCC to produce CCCCCCCCCC(Oc1ccc(C2=CCCCCC2)cc1)C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.