158879-85-7 Spiro[furan-2(5H),6'(2'H)-indeno[1,7-bc]furan]-2',5-dione,3,3',4,4',5',5'a,7',7'a-octahydro-3',4',7'-trihydroxy-4-(2-hydroxy-1-methoxyethylidene)-5'-methoxy-5'a-methyl-3'-(1-methylethyl)-,[3'R-[3'a,4'a,5'a,5'ab,6'b(E),7'b,7'ab]]- 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