(S)-2-Acetoxy-3-[2-(tert-butoxycarbonyl-methyl-amino)-ethyl]-5-methoxy-3-methyl-2,3-dihydro-indole-1-carboxylic acid benzyl ester

(2R,3S)-3-[2-(tert-Butoxycarbonyl-methyl-amino)-ethyl]-2-((S)-1-hydroxy-allyl)-5-methoxy-3-methyl-2,3-dihydro-indole-1-carboxylic acid benzyl ester