AIDS-097263 AIDS097263 [S-[1R*,2S*(2S*,3R*)]]-N-[3-[[3-[[(1,1-Dimethylothoxy)carbonyl]amino]-2-hydroxy-4-phenylbutyl]amino]-2-hydroxy-1-(phenylmethyl)-proyl]-N,N-[(2-pyridinylmethoxy)carbonyl]-L-valinamide