Showing structure for C[Si](C)(C)NC1=NC(N)=NC2=NC=C(CN(C3=CC=C(C(=O)N(C(CCCNC(=O)C4=CC=CC=C4C(=O)O)C(=O)O)[Si](C)(C)C)C=C3)[Si](C)(C)C)N=C12