InChI=1/C19H26N4O5S/c1-19(2,3)28-18(26)23-14(9-13-6-5-7-29-13)16(24)22-15(17(25)27-4)8-12-10-20-11-21-12/h5-7,10-11,14-15H,8-9H2,1-4H3,(H,20,21)(H,22,24)(H,23,26 histidine, N-[(1,1-dimethylethoxy)carbonyl]-3-(2-thienyl)alanyl-, methyl ester methyl N-(tert-butoxycarbonyl)-3-(2-thienyl)alanylhistidinate