Pyrazino
1,4,7,10-Tetraazacyclododecane-1,4,7-triacetic acid,10-[[2,3-bis(ethoxycarbonyl)pyrazino[2,3-f][1,10]phenanthrolin-7-yl]methyl]-, 1,4,7-tris(1,1-dimethylethyl) 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)-