Complex sentence: Aztreonam (trade names Azactam injection, Cayston inhalation) is a synthetic monocyclic beta-lactam antibiotic (a monobactam), with the nucleus based on a simpler monobactam isolated from "Chromobacterium violaceum".
Split into simpler sentences: Aztreonam (trade names Azactam injection, Cayston inhalation) is a beta-lactam antibiotic (a monobactam). It is a synthetic monocyclic with the nucleus based on a simpler monobactam isolated from "Chromobacterium violaceum".