preferred_name: L-threonine,(3R)-N-acetyl-3-hydroxy-L-leucyl-(aR)-a-hydroxybenzenepropanoyl-2,3-idehydro-N-methylalanyl-L-alanyl-N-methyl-L-alanyl-(3R)-3-(((2S,3R)-3-hydroxy-4-methyl-1-oxo-2-((1-oxopropyl)amino)pentyl)oxy)-L-leucyl-N,O-dimethyl-,(7-1)-lactone