(S)-N-[(R)-1-(1,3-benzodioxol-5-yl)butyl]-3,3-diethyl-2-[4-(4-methylpiperazin-1-karbonyl)fenoxyl]-4-oxoazetidin-1-karboxamid
(2S)-N-[(R)-1-(1,3-benzodioxol-5-yl)butyl]-3,3-diethyl-2-4-[(4-methylpiperazin-1-yl)carbonyl]phenoxy-4-oxoazetidine-1-carboxamide