Complex sentence: Pyrrolidonyl- "beta"-naphthylamide (PYR) is a molecule used in microbiology to detect the presence of pyrrolidonyl peptidase.
Split into simpler sentences: Pyrrolidonyl- "beta"-naphthylamide (PYR) is a molecule used in microbiology. It can be used to detect the presence of pyrrolidonyl peptidase.