4-(2-{[bis(benzyloxy)phosphoryl]oxy}ethyl)-2-methoxyphenyl (1R,2S)-1-[3,5-bis(trifluoromethyl)phenyl]-2-((tert-butoxycarbonyl){[4'-fluoro-5'-propyl-2'-methoxy-4-(trifluoromethyl)biphenyl-2-yl]methyl}amino)propyl carbonate