Isolation, structure, and synthesis of dolastatin C, a new depsipeptide from the sea hare Dolabella auricularia Sone, H.; Nemoto, T.; Ojika, M.; Yamada, K. Tetrahedron Letters 34(52): 8445-8448 1993 0040-4039 10.1016/s0040-4039(00)61355-2 https://eurekamag.com/research/021/230/021230719.php