The Commission may, by rules or regulations upon its own motion, or by order on application by an interested person, exempt conditionally or unconditionally any person, registration statement, indenture, security or transaction, or any class or classes of persons, registration statements, indentures, securities, or transactions, from any one or more of the provisions of this subchapter, if and to the extent that such exemption is necessary or appropriate in the public interest and consistent with the protection of investors and the purposes fairly intended by this subchapter. The Commission shall by rules and regulations determine the procedures under which an exemption under this subsection shall be granted, and may, in its sole discretion, decline to entertain any application for an order of exemption under this subsection.