Assertion: pyrimidine's ring | /r/CapableOf | substitute with 1-3 substituents of r9
Facets:
value: optionally
type: MANNER
value: independently
type: MANNER
Source sentences:
text: alternatively, R7 and R8 taken together form a saturated or partially or fully unsaturated 5-6 membered monocyclic or 7-10 membered bicyclic ring of carbon atoms optionally including 1-3 heteroatoms selected from O, N, or S, and the ring optionally substituted independently with 1-3 substituents of R9;