Showing structure for CC(=O)C1(O)CC2=C(O)C3=C(C(=O)C4=C(O[Si](C)(C)C)C=CC=C4C3=O)C(O[Si](C)(C)C)=C2C(OC2CC(N)C(OC(CC(C)O[Si](C)(C)C)OC(C)CO)C(C)O2)C1