3,9-dihydroxy-11-methoxy-10-[(1E)-3-methylbut-1-en-1-yl]-6-(prop-1-en-2-yl)-6,7-dihydro-8H-chromeno[3,2-d][1]benzoxepin-8-one

3,9-dihydroxy-11-methoxy-10-[(1E)-3-methylbut-1-en-1-yl]-6-(prop-1-en-2-yl)-6,7-dihydro-8H-chromeno[3,2-d][1]benzoxepin-8-one