Assertion: pyrimidine's ring | /r/HasProperty | substituted
Facets:
value: with up to 5 substituents
type: OTHER
value: optionally
type: MANNER
Source sentences:
text: If not specified as such, then it is contemplated that each ring (monocyclic) in a ring system (if bicyclic or tricyclic) may either be fully aromatic, partially aromatic or fully saturated, and optionally substituted with up to 5 substituents.