Using CCOCOC1CC2C(=O)NC3(C(=O)OCC)CC3C=CCCCCN(C)C(=O)C2C1 to produce CCOCOC1CC2C(=O)NC3(C(=O)O)CC3C=CCCCCN(C)C(=O)C2C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.