Using CO[C@@H]1CN(C(=O)OC(C)(C)C)C[C@H]1NC(=O)OCc1ccccc1 to produce CO[C@@H]1CNC[C@H]1NC(=O)OCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.