Showing structure for C=CC1=C(C)C(=CC2=NC(=CC3=C(CCC(=O)[O-])C(C)=C(C=C4C(C=C)=C(C)C(=O)N4[Si](C)(C)C)N3[Si](C)(C)C)C(CCC(=O)[O-])=C2C)N([Si](C)(C)C)C1=O