2-piperidinecarbonitrile, 3-ethyl-3-hydroxy-4-(1H-indol-2-ylcarbonyl)-1-methyl-, (2R,3R,4S)- InChI=1/C18H21N3O2/c1-3-18(23)13(8-9-21(2)16(18)11-19)17(22)15-10-12-6-4-5-7-14(12)20-15/h4-7,10,13,16,20,23H,3,8-9H2,1-2H3/t13-,16-,18-/m1/s rel-(2R,3R,4S)-3-ethyl-3-hydroxy-4-(1H-indol-2-ylcarbonyl)-1-methylpiperidine-2-carbonitrile