Synonyms: Sodium pepsinostreptin;NSC301503;60252-35-9;12,20-Dihydroxy-11,19-diisobutyl-5,8-diisopropyl-16-methyl-3,6,9,14,17-pentaoxo-4,7,10,15,18-pentaazadocosan-22-oic acid;Sodium pe.psi.nostreptin;AC1L8SHR;NSC 301503;NSC-301503;3-hydroxy-4-[2-[[3-hydroxy-6-methyl-4-[[3-methyl-2-[[3-methyl-2-(propanoylamino)butanoyl]amino]butanoyl]amino]heptanoyl]amino]propanoylamino]-6-methylheptanoic acid