Showing structure for CN1C2=C(O[Si](C)(C)C)C=CC=C2C(=O)C2=C(O[Si](C)(C)C)C(C3CC(C)(C)OC4=CC(O[Si](C)(C)C)=C5C(=O)C6=CC=CC(O)=C6N(C)C5=C43)=C3OC(C)(C)C=CC3=C21