147334-90-5 Antibiotic NK 374186B3 L-Serine, N-((2R,3R,4S,5R)-3,5-dihydroxy-2,4-dimethyl-1-oxooctadecyl)-L-valyl-L-threonyl-, (3-13)-lactone, 3-acetate L-Serine, N-(N-(N-(3,5-dihydroxy-2,4-dimethyl-1-oxooctadecyl)-L-valyl)-L-threonyl)-, lambda-lactone, 3-acetate, (2R-(2R*,3R*,4S*,5R*))- NK 374186B3 Stevastelin B 3 Stevastelin B3