Nα-((tert-butyloxy)carbonyl)-Nβ-<1-amino-3(S)-(4-amino-6-(amido-Nim-(triphenylmethyl)-erythro-β-hydroxy-L-histydyl methyl ester)-5-methylpyrimidin-2-yl)propion-3-yl>-(S)-β-aminoalanine amide