2,7:3,6-Dimethanonaphth(2,3-b)oxiren-2a(3H)-ol, 3,4,5,6,9,9-hexachloro-1a,2,6,6a,7,7a-hexahydro-, (1aalpha,2beta,2aalpha,3beta,6beta,6aalpha,7beta,7aalpha)- 22259-51-4 7-Hydroxydieldrin