Naphthyridine
5,10b:11,4b-Bis(iminoethano)dibenzo[c,h][2,6]naphthyridine,5,6-dihydro-13,18-dimethyl-, [4bS-(4ba,5a,10ba)]-
(7aS,9E)-9-Ethylidene-5,6,7,7aα,8,8aα,9,10-octahydro-12β-acetoxy-7-acetylindolo[3,2,1-ij]pyrano[3,4-b][1,5]naphthyridine-12aα(12H)-carboxylic acid methyl ester
4,6-Methano-5H-benz[h]oxazolo[3,2-a]pyrazino- [3,2,1-de][1,5]naphthyridine-7-carbonitrile,1,- 2,3a,4,4a,6,7,9,10,13,13b,13c-dodecahydro-11- hydroxy-9-(hydroxymethyl)-5,12-dimethyl- 10,13-dioxo-,(3aS,4R,4aS,6R,7S,9S,13bS,- 13cS)-