Using [BH3-]C#N, O=C1CCN(S(=O)(=O)c2cccc3cnccc23)CC1 to produce NC1CCN(S(=O)(=O)c2cccc3cnccc23)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.