(13)Cytochalasa-13,17,21-triene-1,20,23-trione, 6,7-epoxy-19-hydroxy-10-(1H-indol-3-yl)-16,18-dimethyl-, (7S,13E,16S,17E,19R,21E)- 50335-03-0 BRN 1097707 Chaetoglobosin A Chaetoglobosins NSC 366739