Using COC(=O)C1=CC[C@H]2CC[C@@H]1N2C(=O)OC(C)(C)C to produce COC(=O)C1CC[C@H]2CC[C@@H]1N2C(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.