for the following products
(Z)-2-(2-Aminothiazol-4-yl)-2-(((1-(tert-butoxy)-2-methyl-1-oxopropan-2-yl)oxy)imino)acetic acid | (Z)-2-Amino-alpha-[1-(tert-Butoxycarbonyl)]-1-1-methylethoxyimino-4-thiazolacetic acid | ATTBA and (Z)-2-(2-tert-Butoxycarbonylprop-2-oxyimino)-2-(2-amino-thiazol-4-yl) acetic acid
