Assertion: vitamin e | /r/HasAspect | a phytl tail
Facets:
value: with centers
type: LOCATION
value: with three chiral points
type: OTHER
Source sentences:
text: In addition to distinguishing tocopherols and tocotrienols by position of methyl groups, the tocopherols have a phytl tail with three chiral points or centers that can have a right or left orientation.