77620-55-4 NSC310656 Spiro(2,5-methano-1-benzoxepin-10,2'-oxirane), trichothec-9-ene-3,8-dione deriv. Trichothec-9-ene-3,8-dione, 4,15-bis(acetyloxy)-12,13-epoxy- Trichothec-9-ene-3,8-dione, 4,15-bis(acetyloxy)-12,13-epoxy-, (4.beta.)-