(b)(1) Except as provided in paragraph (2) of this subsection,
subsection (c) of this section, and section 1104(a)(3), on request
of a party in interest, and after notice and a hearing, absent
unusual circumstances specifically identified by the court that
establish that the requested conversion or dismissal is not in the
best interests of creditors and the estate, the court shall convert
a case under this chapter to a case under chapter 7 or dismiss a
case under this chapter, whichever is in the best interests of
creditors and the estate, if the movant establishes cause.