S1(=O)(=O)C=C(N)C2(O1)C(CO[Si](C)(C)C(C)(C)C)OC(N3C=C(C)C(=O)N(CCCOC(=CC(=O)c4ccccc4)c5ccccc5)C3=O)C2O[Si](C)(C)C(C)(C)C