(S)-Ethyl 2-((2S,6R)-5-oxo-2-(thiophen-2-yl)-1,4-thiazepan-6-ylamino)-4-phenylbutanoate

(2s,6r)-6-[[1(s)-ethoxycarbonyl-3-phenylpropyl]amino]-5-oxo-(2-thienyl)perhydro- ; (s)-ethyl 2-(((2s,6r)-5-oxo-2-(thiophen-2-yl)-1,4-thiazepan-6-yl)amino)-4-phenylbutanoate ; (2s,6r)-6-[[(1s)-1-ethoxycarbonyl]-3- phenylpropyl]amino]-2-(2-thienyl)-1,4-thiazepan-5-one ; (2s,6r)-6-[[1(s)-ethoxycarbonyl-3-phenylpropyl]amino]-5-oxo-(2-thienyl)perhydro-1,4-thiazepine ; [2s-[2a,6b(r*)]]-alpha-[[hexahydro-5-oxo-2-(2-thienyl)-1,4-thiazepin-6-yl]amino]-benzenebutanoic acid ethyl ester