Matridine

(7aS,13aR,13bR,13cS)-Dodecahydro-1H,5H,10H-dipyrido[2,1-f:3',2',1'-ij][1,6]naphthyridine

(7aS,7aα,13aβ,13bα,13cα)-Dodecahydro-1H,5H,10H-dipyrido[2,1-f:3',2',1'-ij][1,6]naphthyridine

(7aS)-2,3,6,7,7aα,8,11,12,13,13aβ,13bα,13cα-Dodecahydro-1H,5H,10H-dipyrido[2,1-f:3',2',1'-ij][1,6]naphthyridine