<prompt> Active ingredient of marking nut is -SemecarpolCrotinAbrinNone  <response>: Marking Nut Botanical name: Semicarpus anacardium Common name: Marking nut, bhilawa, biba Toxic Principle Semecarpol Bhilawanol REF;THE SYNOPSIS OF FORENSIC MEDICINE:KS NARAYANA REDDY;28th EDITION;PAGE NO317 