1(3H)-Isobenzofuranone, 3-((2,3-dihydro-1,4-benzodioxin-6-yl)amino)-6,7-dimethoxy- 3-((2,3-Dihydro-1,4-benzodioxin-6-yl)amino)-6,7-dimethoxy-1(3H)-isobenzofuranone 64179-31-3