You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule that fulfills the requirement: The molecule is a purgative, coagulant, abortifacient and belongs to the central nervous system stimulant class of molecules. The molecule is a utero tonic and bitter, belonging to both the cathartic and parasympathicomimetic classes of molecules.
user