Synonyms: OstreogrycinB (6CI,7CI); Virginiamycin S1, 4-[4-(dimethylamino)-N-methyl-L-phenylalanine]-;12H-Pyrido[2,1-f]pyrrolo[2,1-l][1,4,7,10,13,16]oxapentaazacyclononadecine,cyclic peptide deriv.; Antibiotic PA 114B; Antibiotic PA 114B1; Glycine,N-[(3-hydroxy-2-pyridinyl)carbonyl]-L-threonyl-D-2-aminobutanoyl-L-prolyl-4-(dimethylamino)-N-methyl-L-phenylalanyl-4-oxo-L-2-piperidinecarbonyl-L-2-phenyl-,r-lactone; Mikamycin B; MikamycinIA; NSC 92554; PA 114B; Pristinamycin P 1; Streptogramin B; Vernamycin Ba