Erythrophleguine

(1S,4bα,7E,8aβ,10aα)-7-[2-[2-(Dimethylamino)ethoxy]-2-oxoethylidene]tetradecahydro-10α-hydroxy-1,4aβ,8α-trimethyl-9-oxo-1β-phenanthrenecarboxylic acid methyl ester