Showing structure for C[Si](C)(C)OCC(O)C1OC2C3=C(O)C(O)=C(O[Si](C)(C)C)C(C4=C(O)C(O)=C5OC(=O)C6=C7C(=C(O[Si](C)(C)C)C(O)=C6)OC(=O)C4=C57)=C3C(=O)OC2C1O