Showing structure for CC1=CC2=C3C(=CC(O)=CC3=[O+]1)OC(C1=CC(O)=C(O)C(O[Si](C)(C)C)=C1)=C2OC1OC(COC2OC(C)C(O)C(O)C2O)C(O[Si](C)(C)C)C(O[Si](C)(C)C)C1O