What is the shorthand notation for the carboxylic acid in the most common type of sunflower seed?
Sunflower seed:  There are three types of commonly used sunflower seeds: linoleic (most common), high oleic, and NuSun developed for sunflower oil. Linoleic acid:  A shorthand notation like "18:2 (n-6)" or "18:2 "cis"-9,12" may be used in literature.
"18:2 (n-6)" or "18:2 "cis"-9,12"