((4-(4-Cyclopentyl-2,6,7-trioxabicyclo(2.2.2)oct-1-yl)phenyl)ethynyl)trimethylsilane 134133-94-1 Silane, ((4-(4-cyclopentyl-2,6,7-trioxabicyclo(2.2.2)oct-1-yl)phenyl)ethynyl)trimethyl-