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![Thumbnail of 4,4'-Dibromo-9,9'-spirobi[9H-fluorene]](/medias/D5802.jpg?context=bWFzdGVyfHJvb3R8NTkxNHxpbWFnZS9qcGVnfGFERTVMMmhqTVM4NU1EY3lNamMwTXpReE9URTRMMFExT0RBeUxtcHdad3xjODQ3MjM2ODBhNmJmNjI1NDE2ZWJlNTc5N2Y0YjFjZGMxMTNlZTBjODJkY2U1NWU0MjhkMDJlYTJiMzgwMjEy)
