110771-17-0 Boc-L-phe-dehydro-phe-L-val-och3 Bpdpve Butyloxycarbonyl-phenylalanyl-dehydrophenylalanyl-valine methyl ester L-Valine, N-((Z)-alpha,beta-didehydro-N-(N-((1,1-dimethylethoxy)carbonyl)-L-phenylalanyl)phenylalanyl)-, methyl ester N-((Z)-alpha,beta-didehydro-N-(N-((1,1-dimethylethoxy)carbonyl)-L-phenylalanyl)phenylalanyl)-L-valine methyl ester