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(2017/12/06)(4S,5R)-methyl 5-(4-chlorophenyl)-1-(diphenylphosphinoyl)-4,5-dimethyl-2-thioxoimidazolidine-4-carboxylate
(4S,5R)-methyl 1-(diphenylphosphinoyl)-4,5-dimethyl-5-(4-methylphenyl)-2-thioxoimidazolidine-4-carboxylate
(4R,5R)-methyl 5-(4-methoxyphenyl)-4,5-dimethyl-2-thioxooxazolidine-4-carboxylate