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(3S,3As,6ar)-3-isopropyl-1-(methanesulfonyl)-4-[4-(1-piperidinyl)-2(E)-butenoyl]perhydropyrrolo[3,2B]pyrrol-2(1H)-one hydrochloride197090-44-1100 % similar 4-(1-Piperidinyl)-2-(E)-butenoicacid hydrochloride197892-69-634 % similar