| Synonyms: | Phthoramycin;12-De[(3-O-methyl-2,6-dideoxy-β-D-ribo-hexopyranosyl)oxy]cytovaricin;Spiro[21,25-methano-2H,19H,23H-pyrano[2,3-h][1,5]dioxacyclotetracosin-23,2'-[2H]pyran]-19-one, 3,3',4,4',4a,5',6',7,8,9,10,11,12,13,14,15,16,21,22,25,26,26a-docosahydro-10,11,13,15,16,26a-hexahydroxy-6'-(2-hydroxybutyl)-3,5',10,14,16,27-hexamethyl- |