Complex sentence: Picrotoxin, also known as cocculin, is a poisonous crystalline plant compound, first isolated by the French pharmacist and chemist Pierre François Guillaume Boullay (1777--1869) in 1812.
Split into simpler sentences: Picrotoxin, also known as cocculin, is a poisonous crystalline plant compound. It was first isolated by the French pharmacist and chemist Pierre François Guillaume Boullay (1777--1869) in 1812.