Using COCCCCN1C(=O)C(C)(C)c2ccc(C(=O)OC)cc21 to produce COCCCCN1C(=O)C(C)(C)c2ccc(C(=O)O)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.