Using COC(=O)[C@H]1CN(C(=O)OC(C)(C)C)CC[C@@H]1N[C@@H](C)c1ccccc1 to produce COC(=O)[C@H]1CN(C(=O)OC(C)(C)C)CC[C@@H]1N, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.