Chemical Name: (8R,9S,13S,14S,17R)-13-ethyl-17-ethynyl-3-methoxy-4,6,7,8,9,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-ol
Synonym: (1R,2R,4S,5S,7s)-7-[[(2S)-3-hydroxy-2-phenylpropanoyl]oxy]-9,9-dimethyl-3-oxa-9-azoniatricyclo[3.3.1.02,4]nonane (methylhyoscine)