Complex sentence: Mechlorethamine also known as chlormethine, mustine, nitrogen mustard and HN2 and sold under the brand name Mustargen, is the prototype of alkylating agents, a group of anticancer chemotherapeutic drug.
Split into simpler sentences: Mechlorethamine also known as chlormethine, mustine and HN2 is a nitrogen mustard sold under the brand name Mustargen. It is the prototype of alkylating agents, a group of anticancer chemotherapeutic drug.