Characteristic peaks at δ 2.01–2.05 ppm are for allylic protons of –CH2, at δ 2.28–2.33 ppm for α protons of ester groups and at δ 2.76–2.78 ppm for –CH2 of double allylic protons. Peaks at δ 4.11–4.32 ppm are for protons of glyceride moiety and δ 5.26–5.35 ppm are for the protons of the–CH=CH– moiety.