[Rh].c1ccc(cc1)c2ccnc3c4nccc(c5ccccc5)c4ccc23.c6ccc(cc6)c7ccnc8c9nccc(c%10ccccc%10)c9ccc78.c%11ccc(cc%11)c%12ccnc%13c%14nccc(c%15ccccc%15)c%14ccc%12%13