DL-2-[2'-(3''-tert-butyl-5''-methyl-7''-oxo-7H-furo[3,2-g][1]benzopyran-6''-yl)-acetylamino]-3-phenylpropionic acid

L-2-[2'-(3''-tert-butyl-5''-methyl-7''-oxo-7H-furo[3,2-g][1]benzopyran-6''-yl)-acetylamino]-3-phenylpropionic acid