methyl 2-{2-[(4S,5R)-1-(butoxycarbonyl)amino-2-hydroxy]propyl-5-methyl(thiazol-4-yl)}-5-methylthiazole-4-carboxylate

methyl 2-[1-(N-Boc)amino-3-methoxycarbonyl]ethyl-5-methylthiazole-4-carboxylate