Complex sentence: Cyamelide is an amorphous white solid (HNCO) x and is the polymerisation product of cyanic acid together with its cyclic trimer cyanuric acid.
Split into simpler sentences: Cyamelide is an amorphous white solid with the approximate formula (HNCO) x. It is the product of the polymerisation of cyanic acid together with its cyclic trimer cyanuric acid.