(-)-(1R,2R,3R,5R,6R)-2-amino-3-(2-propenyloxy)-6-fluorobicyclo[3.1.0]hexane-2,6-dicarboxylic acid 2-benzyl 6-ethyl ester

(-)-(1R,2R,3R,5R,6R)-2-azido-3-(2-propenyloxy)-6-fluorobicyclo[3.1.0]hexane-2,6-dicarboxylic acid 2-benzyl 6-ethyl ester