11049-71-1 (8-hydroxy-3,6-dimethylidene-2-oxospiro[3a,4,5,6a,7,8,9a,9b-octahydroazuleno[4,5-b]furan-9,2'-oxirane]-4-yl) 3-chloro-2-hydroxy-2-methylpropanoate 56964-37-5 (8E,24E)-5,6,17,19-tetrahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-1,9,11-trioxo-8-{[(4-prop-2-yn-1-ylpiperazin-1-yl)amino]methylidene}-1,2,8,9-tetrahydro-2,7-(epoxypentadeca[1,11,13]trienoimino)naphtho[2,1-b]furan-21-yl acetate 57013-87-3 (8E,24E)-5,6,17,19-tetrahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-1,9,11-trioxo-8-[({4-[3-(trifluoromethyl)benzyl]piperazin-1-yl}amino)methylidene]-1,2,8,9-tetrahydro-2,7-(epoxypentadeca[1,11,13]trienoimino)naphtho[2,1-b]furan-21-yl acetate [57013 57165-95-4 (8E,24E)-5,6,17,19-tetrahydroxy-8-[(2-{[2-(hydroxymethyl)phenyl]acetyl}hydrazino)methylidene]-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