Synonyms: Annotine (6CI,7CI,8CI);1,5:4,12b-Dimethano-1H,3H,12bH-oxocino[3,4,5-ij]quinolizin-3-one, 4,5,5a,8,10,11,12,12a-octahydro-5a-hydroxy-4-methyl-,[1R-(1a,4b,5a,5ab,12aa,12bb)]-; [1R-(1a,4b,5a,5ab,12aa,12bb)]-4,5,5a,8,10,11,12,12a-Octahydro-5a-hydroxy-4-methyl-1,5:4,12b-dimethano-1H,3H,12bH-oxocino[3,4,5-ij]quinolizin-3-one