(2Z,4S,4aR,5S,5aR,12aS)-2-[amino(hydroxy)methylidene]-4-(dimethylamino)-5,10,11,12a-tetrahydroxy-6-methylidene-4a,5a,6,12a-tetrahydrotetracene-1,3,12(2H,4H,5H)-trione - 2-amino-2-(hydroxymethyl)propane-1,3-diol (1:1)