Using CC(=O)O[BH-](OC(C)=O)OC(C)=O, CC(C)(C)OC(=O)C1CCNN1C(=O)OC(C)(C)C to produce CN1CCC(C(=O)OC(C)(C)C)N1C(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.