Using CCOC(=O)C(CC(=O)OC(C)(C)C)c1cccc2cnccc12 to produce CC(C)(C)OC(=O)CC(C(=O)O)c1cccc2cnccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.