RF-1023A

trapoxin A

Cyclo[L-Phe-L-Phe-D-Hpr-6-[2-[(S)-oxiranyl]-2-oxoethyl]-L-Nle-]

(4aR,7S,10S,13S)-10,13-Dibenzyl-7-[6-oxo-6-[(S)-oxiranyl]hexyl]-1,2,3,4,9,10-hexahydro-4aH-6,9,12,14a-tetraazabenzocyclododecene-5,8,11,14(6H,7H,12H,13H)-tetrone