What is the carbon content, by weight, of vegetable oil? I have only a high school understanding of chemistry, so please bear with me and my ham-fisted question.  I’m trying to understand the carbon content in vegetable oil.  I get that various oils have differing densities, so the measure needs to be “by weight”.  Molecular weight doesn’t help, I need the measure in useful measures like “grams per liter” (preferred).
(Also of note, I’m not certain I got the right tags)
UPDATE: Based on feedback, I looked up oil production per hectare to determine an oil type.  It appears that the highest production per hectare (which feeds into the analysis I'm working on) for grain-based oils is rapeseed.  For tree-based fruits, it's oil palm, and then there's algae oil.
I'm trying to establish how much carbon is embodied in the oil production of one acre of crop (a bit of information that probably would have been helpful to say first).
Vegetable oils are mainly made of glycerol esters of oleic acid, linoleic acid and palmitic acid. For example, the fatty acids extracted from olive oil are a mixture of $74$% oleic acid, $11$% palmitic acid, and $10$% linoleum acid, plus 5% other acids. These proportions are average values that may change from one sample to the next one.
The mass proportion of carbon atom is $77.2$ % in glycerol trioleate, $78.3$ % in glycerol trilinoleate, and $75.8$ % in glycerol tripalmitate