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Showing structure for C[Si](C)(C)OC1=CC(C2=CC(=O)C3=C(O)C(C4OC(CO)C(O)C(O)C4O[Si](C)(C)C)=C(O)C(C4OCC(O)C(O[Si](C)(C)C)C4O[Si](C)(C)C)=C3O2)=CC=C1O