133155-89-2 Cyclo((S)-gamma-oxo-L-alpha-aminooxiraneoctanoyl-L-phenylalanyl-L-phenylalanyl-D-2-piperidinecarbonyl) Cyclo((S)-phenylalanyl-(S)-phenylalanyl-(R)-pipecolinyl-(2S,9S)-2-amino-8-oxo-9,10-epoxydecanoyl) Trapoxin trapoxin A