A corporation or subsidiary of a corporation may not make a distribution to the corporation's shareholders on any shares of its stock of a class or series that are junior to outstanding shares of another class or series with respect to distribution of assets on liquidation if, after giving effect to the distribution, the excess of its assets, exclusive of goodwill, capitalized research and development expenses, evidences of debts owing from directors or officers or secured by the corporation's own shares, and deferred charges, over its liabilities, not including deferred taxes, deferred income and other deferred credits, would be less than the liquidation preference of all shares having a preference on liquidation over the class or series to which the distribution is made.