[Eu].O=C(CC(=O)C(F)(F)F)c1ccc2c(c1)C(=O)c3ccccc23.O=C(CC(=O)C(F)(F)F)c4ccc5c(c4)C(=O)c6ccccc56.O=C(CC(=O)C(F)(F)F)c7ccc8c(c7)C(=O)c9ccccc89.O=C(CC(=O)C(F)(F)F)c%10ccc%11c(c%10)C(=O)c%12ccccc%11%12.N%13CCCCC%13