Using [BH3-]C#N, CC(C)(C)OC(=O)N1CC[C@@H]2CNC[C@@H]21 to produce CN1C[C@H]2CCN(C(=O)OC(C)(C)C)[C@H]2C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.