2-Butenoic acid, 2-methyl-, 7-[[2,3-dihydroxy-2-(1-methoxyethyl)-3-methyl-1-oxobutoxy]methyl]-2,3,5,7a-tetrahydro-1H-pyrrolizin-1-yl ester, [1S-[1.alpha.(Z),7(2S*,3R*),7a.alpha.]]- 303-34-4 Heliotridine ester with lasiocarpum & angelic acid LASIOCARPINE NCI-C01478 NSC30625 WLN: T55 AN CUTJ D1OVXQXQ1 & 1 & Y1 & O1 FOVY1 & U2