51707-21-2 (8E,24E)-8-[(2-decanoylhydrazino)methylidene]-5,6,17,19-tetrahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-1,9,11-trioxo-1,2,8,9-tetrahydro-2,7-(epoxypentadeca[1,11,13]trienoimino)naphtho[2,1-b]furan-21-yl acetate 1398-77-2 Alaninamide, N-[[2-[21-(1,2-dihydroxy- 1-methylpropyl)-14-ethylidene-3,9,10,11,12,13,14,18 ,19,20,21,27,28,32a,39,40-hexadecahydro-39-hydrox y-11,43-bis(1-hydroxyethyl)-34,49-dimethyl-52-methyle ne-46-(1-