(-)-(1R,2R,3S,4S)-3-(4-Chlorphenyl)-2'-morphospiro(norman-2.5'-(1)pyrrolin (-)-(1R,2R,3S,4S)-3-(O-Chlorophenyl)-2'-morpholinospiro(normane-2:5'-(1)pyrroline) 90243-97-3 Spiclamine Spiclamine [INN] Spiclaminum