In any case in which an initial tax is imposed by subsection (a)(1) on an act of self-dealing by a disqualified person with a trust described in section
501
(c)(21) and in which the act is not corrected within the taxable period, there is hereby imposed a tax equal to 100 percent of the amount involved. The tax imposed by this paragraph shall be paid by any disqualified person (other than a trustee acting only as a trustee of such a trust) who participated in the act of self-dealing.