Determine the structure?

'H NMR 300 MHz 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 ppm 13C/DEPT NMR 75.5 MHz 35 30 25 20 15 10 0 -5 ppm 29Si NMR 59.6 MHz 55 50 45 40 35 30 25 20 15 10 5 ppm