Showing structure for C[Si](C)(C)OC(=O)C(CCC(=O)O)N(C(=O)CCC(C(=O)O)N(C(=O)C1=CC=C(NCC2CNC3=C(N2)C(=O)[NH]C(N)=N3)C=C1)[Si](C)(C)C)[Si](C)(C)C