(1S,2S)-(-)-1,2-Diphenylethylenediamine(1S,2S)-(-)-1,2-Diphenylethane-1,2-diamine(1S,2S)-(-)-1,2-Diamino-1,2-diphenylethaneDPENDiphenylethylenediamine(1S,2S)-(-)-1,2-Diphenylethylenediamine(1S,2S)-(-)-1,2-二苯基乙二胺(1S,2S)-(-)-1,2-二氨基-1,2-二苯基乙烷(1S,2S)-(+)-1,2-二苯基-1,2-乙二胺(1S,2S)-(-)-1,2-Diphenyl-1,2-ethanediamine(1S,2S)-(-)-1,2-Diphenylethylenediamine