[Methyl-((R)-4-methyl-2-methylamino-pentanoyl)-amino]-acetic acid tert-butyl ester

(E)-(3S,6R,12R,15S,18R,24S,25S,26S)-18-((S)-sec-Butyl)-12-isobutyl-6,15-diisopropyl-3,4,10,13,21,25-hexamethyl-26-((E)-1-methyl-but-1-enyl)-24-methylsulfanylmethoxy-1,19-dioxa-4,7,10,13,16-pentaaza-cyclohexacos-21-ene-2,5,8,11,14,17,20-heptaone

6-epi-aurilide