DOCETAXEL SIDE CHAIN NO 1;(3r,4s)-1-Tert-Butoxycarbonyl-3-(2-Ethoxyethoxy)-4-Phenyl-2-Azetidione;(3R,4S)-1-Tert-Butylcarbonyl-3-(2-Ethoxyethoxyl)-4-Phenyl-2-Azetidinone
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