Levosimendan Impurity 14

Chemical Name: 4-(4-(2-(dicyanomethylene)hydrazinyl)phenyl)-3-methyl-4-oxobutanoic acid

Synonym: (2S,3R,4S)-4-(((3S,5S)-5-(bis(methyl-d3)carbamoyl)pyrrolidin-3-yl)thio)-2-((1S)-1-carboxy-2-hydroxypropyl)-3-methyl-3,4-dihydro-2H-pyrrole-5-carboxylic acid