(b) Notwithstanding paragraph (a) of this subdivision, notice shall
not be required under this section to be provided by a cooperative
housing corporation, other than a cooperative housing corporation
subject to the provisions of article two, article four, article five or
article eleven of the private housing finance law, to a tenant who is a
dwelling unit owner or shareholder of such corporation. Nothing in this
paragraph shall relieve such cooperative housing corporation of any
otherwise applicable obligation to provide notice to such tenant
pursuant to any other law or any agreement between the parties.