due to reasonable cause and not to willful neglect

(b)For purposes of this section, the term “qualified first tier tax” means any first tier tax imposed by subchapter A, C, D, or G of this chapter, except that such term shall not include the tax imposed by section 4941(a) (relating to initial tax on self-dealing). (c)In the case of the tax imposed by section 4955(a), subsection (a)(1) shall be applied by substituting “not willful and flagrant” for “due to reasonable cause and not to willful neglect”.

Source

26 USC § 4962(b)


Scoping language

For purposes of this section
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