[Pt].c1ccc(cc1)P(c2ccccc2)c3ccccc3.c4ccc(cc4)P(c5ccccc5)c6ccccc6.c7ccc(cc7)P(c8ccccc8)c9ccccc9.c%10ccc(cc%10)P(c%11ccccc%11)c%12ccccc%12