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(5-Methyl-2-oxo-1,3-dioxolan-4-yl)methyl 2-[(Z)-[1-(2-amino-1,3-thiazol-4-yl)-2-[[(2S,3S)-1-azido-2-methyl-4-oxoazetidin-3-yl]amino]-2-oxoethylidene]amino]oxy-2-methylpropanoate


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