Showing structure for C[Si](C)(C)OCC1OC(OC2=CC=C(C=CCC#CC3=CC=C(OC4OC(CO)C(O)C(O)C4O[Si](C)(C)C)C(O[Si](C)(C)C)=C3)C=C2O)C(O[Si](C)(C)C)C(O)C1O