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(1991)(S)-2-{[5-(Allyl-tert-butoxycarbonyl-amino)-thiophene-2-carbonyl]-amino}-pentanedioic acid diethyl ester
4(3H)-oxo-6-(bromomethyl)-2-methyl quinazoline
(S)-2-[(5-Allylamino-thiophene-2-carbonyl)-amino]-pentanedioic acid diethyl ester