95273-83-9 Deoxy-V-Trypt E Ethyl N-(O-4-deacetyl-4'-deoxyvinblastin-23-oyl-B)-tryptophanate Vincaleukoblastine, O(sup 4)-deacetyl-3-de(methoxycarbonyl)-4'-deoxy-3-(((2-ethoxy-1-(1H-indol-3-ylmethyl)-2-oxoethyl)amino)carbonyl)-, (3(S))-