(S)-3-[5-(tert-Butyl-dimethyl-silanyloxy)-2,4-dimethoxy-3-methyl-phenyl]-2-(9H-fluoren-9-ylmethoxycarbonylamino)-propionic acid

(S)-1-[(1R,3S)-8-Allyloxy-1-allyloxymethyl-3-(tert-butyl-dimethyl-silanyloxymethyl)-5,7-dimethoxy-6-methyl-3,4-dihydro-1H-isoquinolin-2-yl]-2-amino-3-[5-(tert-butyl-dimethyl-silanyloxy)-2,4-dimethoxy-3-methyl-phenyl]-propan-1-one