(2S,10S,10aS)-9-allyloxy-10-hydroxy-1,2,3,5,10,10a-hexahydropyrrolo[1,2-b]isoquinolin-2-yl (2'R,3'S)-3'-benzoylamino-2'-triisopropylsilyloxy-3'-(2-allylphenyl)-propanoate