New York Penal Law Section 105.30 - Conspiracy; no defense.

105.30 Conspiracy; no defense.
It  is  no  defense  to  a  prosecution  for conspiracy that, owing to
  criminal irresponsibility or other legal incapacity or exemption, or  to
  unawareness  of  the  criminal  nature  of  the  agreement or the object
  conduct or of the defendant's  criminal  purpose  or  to  other  factors
  precluding the mental state required for the commission of conspiracy or
  the  object  crime, one or more of the defendant's co-conspirators could
  not be guilty of conspiracy or the object crime.

Last modified: February 3, 2019