134381-21-8 Epoxomicin L-Threoninamide, N-acetyl-N-methyl-L-isoleucyl-L-isoleucyl-N-((1S)-3-methyl-1-(((2R)-2-methyloxiranyl)carbonyl)butyl)- N-Acetyl-N-methyl-L-isoleucyl-L-isoleucyl-N-(3-methyl-1-((2-methyloxiranyl)carbonyl)butyl)-L-threoninamide