Synonyms: 70570-56-8;NSC339281;ACTINOMYCIN D 3-PHENYLOXAZINONE;NSC 339281;L-Valine, L-threonyl-D-valyl-L-prolyl-N-methylglycyl-N-methyl-, (5.fwdarw.1)-lactone, 1,1'-diamide with 10,12-dimethyl-2-oxo-3-phenyl-2H,6H-1,4-oxazino[3,2-b]phenoxazine-5,7-dicarboxylic acid;L-Valine, L-threonyl-D-valyl-L-prolyl-N-methylglycyl-N-methyl-, xi-lactone, 1,1'-diamide with 10,12-dimethyl-2-oxo-3-phenyl-2H,6H-1,4-oxazino(3,2-b)phenoxazine-5,7-dicarboxylic acid