(5Z)-6-((2S,4R)-4-(4-chlorophenylsulphonylamino)-1-(3-pyridylmethyl)-2-pyrrolidinyl) 5-hexenoic acid
(5z)-6-((2s,4r)-4-(4-chlorophenylsulphonylamino)-1-(3-pyridylmethyl)-2-pyrrolidinyl) 5-hexenoic acid