Octanoic acid, [1-[4-[(3-amino-2,3, 6-trideoxy-.alpha.-L-lyxo-hexopyra nosyl)oxy]-1,2,3,4,6, 11-hexahydro-2,5,12-trihydroxy-7-methoxy-6, 11-d ioxo-2-naphthacenyl]-2-hydroxyethylidene]hydrazide, monohydrochloride