"(2S,4S)-tert-butyl 2-(difluoromethyl)-4-hydroxypyrrolidine-1-carboxylate"
"(2S,4S)-tert-butyl 2-(difluoromethyl)-4-hydroxypyrrolidine-1-carboxylate"
"(2S,4S)-tert-butyl 2-(difluoromethyl)-4-hydroxypyrrolidine-1-carboxylate"
"(2S,4S)-tert-butyl 2-(difluoromethyl)-4-hydroxypyrrolidine-1-carboxylate"