Oc1ccc(c2ccccc12)C3=C4C=CC(N4)=C(C5=NC(C=C5)=C(C6=CC=C(N6)C(=C7C=CC3=N7)c8ccc(O)c9ccccc89)c%10ccc(O)c%11ccccc%10%11)c%12ccc(O)c%13ccccc%12%13