N-[2-(2'-Hydroxy-1,3,4,6,7,12b-hexahydrospiro[1-benzofuro[2,3-a]quinolizine-2,4'-imidazol]-3'(5'H)-yl)ethyl]methanesulfonamide

N-{2-[(2R,12bS)-2'-Hydroxy-1,3,4,6,7,12b-hexahydrospiro[[1]benzofuro[2,3-a]quinolizine-2,4'-imidazol]-3'(5'H)-yl]ethyl}methanesulfonamide