AIDS-078757 AIDS078757 IBC-35 Oxacyclohexadeca-11,13-diene-7-acetaldehyde, 6-[[3,6-dideoxy-3-(dimethylamino)-.alpha.-L-erythro-hexopyranosyl]oxy]-15-[(dimethylamino)methyl]-16-ethyl-4-hydroxy-5,9,13-trimethyl-2,10-dioxo-, (4R,5S,6S,7R,9R,15R,16R)-