(13)Cytochalasa-13,17,21-triene-1,20,23-trione, 19-(acetyloxy)-6,7-epoxy-10-(1H-indol-3-yl)-16,18-dimethyl- 19-(Acetyloxy)-6,7-epoxy-10-(1H-indol-3-yl)-16,18-dimethyl-(13)cytochalasa-13,17,21-triene-1,20,23-trione 55653-51-5