Source:http://linkedlifedata.com/resource/umls/id/C0026341
MSH: Theoretical representations that simulate the behavior or activity of chemical processes or phenomena; includes the use of mathematical equations, computers, and other electronic equipment.,CSP: representation of the structure, behavior or activity of a chemical or chemical processes or systems which can be manipulated to demonstrate the effects that various actions will have on the chemical or chemical process or system; do not confuse with STRUCTURAL MODEL.