A prefix used to indicate the @E02069@ for natural products and related molecules where the @T06516@ only refers to one @E02069@, e.g.
ent-kaurene is the @E02069@ of kaurene.
Source: PAC, 1996,
68, 2193. (
Basic terminology of stereochemistry (IUPAC Recommendations 1996)) on page 2208 [
Terms] [
Paper]