Arugosin C

1,12a-Dihydro-6,8-dihydroxy-1-(1-hydroxy-1-methylethyl)-4-methyl-9-(3-methyl-2-butenyl)[1]benzopyrano[4,5-bc][1]benzoxepin-7(2H)-one

1,12a-Dihydro-6,8-dihydroxy-1-(1-hydroxy-1-methylethyl)-4-methyl-9-(3-methyl-2-butenyl)-[1]benzopyrano[4,5-bc][1]benzoxepin-7(2H)-one