41743-73-1 8H-1,3-Dioxolo(4,5-g)(1)benzopyran-8-one, 9-methoxy-7-(3,4,5-trimethoxyphenyl)- 9-Methoxy-7-(3,4,5-trimethoxyphenyl)-8H-1,3-dioxolo(4,5-g)(1)benzopyran-8-one Irisflorentin