Micafungin Impurity A

Chemical Name: Sodium 5-((1S,2S,3S)-4-(((2S,3R)-5-amino-1-((2S,4S)-2-carbamoyl-3-hydroxy-4-methylpyrrolidin-1-yl)-3-hydroxy-1,5-dioxopentan-2-yl)amino)-3-((2S,4R)-1-((2S,3R)-2-((4S)-4,5-dihydroxy-1-(4-(5-(4-(pentyloxy)phenyl)isoxazol-3-yl)benzoyl)pyrrolidine-2-carboxamido)-3-hydroxybutanoyl)-4-hydroxypyrrolidine-2-carboxamido)-1,2-dihydroxy-4-oxobutyl)-2-hydroxyphenyl sulfate