(3R,4S,5R)-4-[(diethoxyphosphoryl)amino]-3-(1-ethylpropoxy)-5-(methanesulfonyloxy)cyclohex-1-enecarboxylic acid ethyl ester

(3R,4S,5R)-3-azido-4,5-bis-methanesulfonyloxy-cyclohex-1-enecarboxylic acid ethyl ester