Showing structure for 4-{[5,7-dimethoxy-8-(3-methylbut-2-en-1-yl)-2-phenyl-3,4-dihydro-2h-1-benzopyran-4-yl]oxy}-5,7-dimethoxy-8-(3-methylbut-2-en-1-yl)-2-phenyl-3,4-dihydro-2h-1-benzopyran