SMILES: C[Si](C)(C)C1=C(C(=C2C(=C1)C3=C(C(=C4N3C2=NC(=C4C#N)N)C#N)[Si](C)(C)C)N)C#N
Description: The molecule is an organic heterotetracyclic compound consisting of a benzo[a]pyrimido[2,1,6-cd]pyrrolizine ring system having amino substituents at the 2- and 9-positions, trimethylsilyl substituents at the 5- and 7-positions and cyano substituents at the 3-, 4- and 8-postions.