3,9-Dihydroxyoctahydrodibenzo(a,g)biphenylene 75456-21-2 Dhohdbbp Dibenzo(a,g)biphenylene-3,9-diol, 5,6,6a,6b,11,12,12a,12b-octahydro-, (6aalpha,6bbeta,12abeta,12balpha)-