33880-90-9 6H-2,5a-Methano-1-benzoxepin-5-ol, 2,7-dibromo-8-chloro-2,5,7,8,9,9a-hexahydro-5,8,10,10-tetramethyl-, (2R,5R,5aR,7S,8S,9aS)- (8CI) NSC 287456 Pacifenol