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(2002)2-(4-{[(4-methoxy-phenyl)-diphenyl-methyl]-amino}-benzoylamino)-4-{2-[(4-methoxy-phenyl)-diphenyl-methylsulfanyl]-ethylcarbamoyl}-butyric acid tert-butyl ester
2-(4-amino-benzoylamino)-4-{2-[(4-methoxy-phenyl)-diphenyl-methylsulfanyl]-ethylcarbamoyl}-butyric acid tert-butyl ester
(S)-2-{4-[(2-Amino-4-oxo-3,4-dihydro-pteridin-6-ylmethyl)-amino]-benzoylamino}-4-(2-mercapto-ethylcarbamoyl)-butyric acid
2-amino-4-{2-[(4-methoxy-phenyl)-diphenyl-methylsulfanyl]-ethylcarbamoyl}-butyric acid tert-butyl ester