70253-62-2 Leucomycin V, 4A-O-de(2,6-dideoxy-3-C-methyl-alpha-L-ribo-hexopyranosyl)-9-O-(5-(dimethylamino)tetrahydro-6-methyl-2H-pyran-2-yl)-, (9(2R,5S,6R))- Neospiramycin I