Synonyms: Heteratisan-14-one,20-ethyl-6,8-dihydroxy-1-methoxy-4-methyl-, (1a,6b)-; Heteratisine (7CI,8CI);8H-13,3,6a-Ethanylylidene-7,10-methanooxepino[3,4-i]-1-benzazocin-8-one,1-ethyltetradecahydro-12a,14-dihydroxy-6-methoxy-3-methyl-, [3R-(3a,6b,6aa,7b,7aa,10b,12aa,13a,13ab,14S*,15R*)]-; NSC 295654