“…13 C‐NMR (MeOH‐ d 4 , 100 MHz) δ C : 181.0 (COOH, C‐1), 132.7 (CH, C‐9), 131.0 (CH, C‐10), 129.1 (CH, C‐13), 129.1 (CH, C‐12), 128.8 (CH, C‐15), 128.2 (CH, C‐16), 36.2 (CH 2 , C‐2), 30.6 (CH 2 , C‐4), 30.3 (CH 2 , C‐7), 30.3 (CH 2 , C‐5), 30.2 (CH 2 , C‐6), 28.1 (CH 2 , C‐3), 26.5 (CH 2 , C‐8), 26.5 (CH 2 , C‐11), 26.3 (CH 2 , C‐14), 21.4 (CH 2 , C‐17), 14.6 (CH 3 , C‐18). The spectral information was found in comparison to the literature [29] and the compound was named α‐linolenic acid with the molecular formula C 18 H 30 O 2 .…”