6,9-DIHYDRO-9-(3,4,5-TRIMETHOXYPHENYL)FURO[3',4':5,6]PYRANO[2,3-F]-1,3-BENZODIOXOLE-8-ONE Furo[3',4':5,6]pyrano[2,3-f]-1,3-benzodioxole-8-one, 6,9-dihydro-9-(3,4,5-trimethoxyphenyl)- NSC618862