O=C(C)Nc1ccccc1C2=C3C=CC(N3)=C(C4=NC(C=C4)=C(C5=CC=C(N5)C(=C6C=CC2=N6)c7ccccc7NC(=O)C)c8ccccc8NC(=O)C)c9ccccc9NC(=O)C