1,3,2-Dioxaborolane,2,2'-(9,9'-spirobi[9H-fluorene]-2,2'-diyl)bis[4,4,5,5-tetramethyl-

1,3,2-Dioxaborolane,2,2'-(9,9'-spirobi[9H-fluorene]-2,2'-diyl)bis[4,4,5,5-tetramethyl- · CAS 676168-63-1