(17-(CYCLOPROPYLMETHYL)-4,5-EPOXY-14-HYDROXY-3-(((TRIFLUOROMETHYL)SULFONYL)OXY)-(5.ALPHA.)-MORPHINAN-6-ONE CYCLIC 1,2-ETHANEDIYL ACETAL
(17-(cyclopropylmethyl)-4,5-epoxy-14-hydroxy-3-(((trifluoromethyl)sulfonyl)oxy)-(5.alpha.)-morphinan-6-one cyclic 1,2-ethanediyl acetal