preferred_name: N-(6-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)hexanoyl)-N-methyl-L-valyl-N-((3R,4S,5S)-1-((2S)-2-((1S,2R)-3-(((1S)-1-carboxy-2-phenylethyl)amino)-1-methoxy-2-methyl-3-oxopropyl)-1-pyrrolidinyl)-3-methoxy-5-methyl-1-oxo-4-heptanyl)-N-methyl-L-valinamide