Using CCOC(=O)CC(=O)N1C(C(=O)OC(C)(C)C)CCCN1C(=O)OCc1ccccc1 to produce CCOC(=O)CC(=O)N1NCCCC1C(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.