77620-52-1 NSC314632 Spiro(2,5-methano-1-benzoxepin-10,2'-oxirane), trichothec-9-ene-3,4,15-triolderiv. TRICHOTHECANE DERIV Trichothec-9-ene-3,4,15-triol, 12,13-epoxy-, 4-(chloroacetate) 15-(2-methyl-2-propenoate), (3.alpha.,4.beta.)-