naphthocyanidine

1,2,3a,4,4a,6,7,9,10,13,13b,13c-Dodecahydro-11-hydroxy-9-(hydroxymethyl)-5,12-dimethyl-10,13-dioxo-4,6-methano-5H-benz[h]oxazolo[3,2-a]pyrazino[3,2,1-de][1,5]naphthyridine-7-carbonitrile