label: (2R)-N-(4-((2S)-3-Methoxy-1-((2R)-2-methyl-7-octynoyl)-5-oxo-2,5-dihydro-1H-pyrrol-2-yl)butyl)-2-methyl-7-octynamide
label_lc: (2r)-n-(4-((2s)-3-methoxy-1-((2r)-2-methyl-7-octynoyl)-5-oxo-2,5-dihydro-1h-pyrrol-2-yl)butyl)-2-methyl-7-octynamide