6-(((((((4-(dimethylamino)-1,4 alpha, 4a alpha,5,5a alpha,6 beta,11,12a alpha-octahydro- 3,6,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-2-naphthacenyl)carbonyl)amino)methyl)amino)phenylacetyl)amino)-3,3-dimethyl-7-oxo-4-thia-1-aza bicyclo(3.2.0)heptane-2-carboxylic acid