Using CCOC(=O)CC1CC2COCC(C1O)N2C(=O)OC(C)(C)C to produce CCOC(=O)CC1CC2COCC(C1=O)N2C(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.