5MF2:
reference: Crystallophore: a versatile lanthanide complex for protein crystallography combining nucleating effects, phasing properties, and luminescence., Engilberge S, Riobe F, Di Pietro S, Lassalle L, Coquelle N, Arnaud CA, Pitrat D, Mulatier JC, Madern D, Breyton C, Maury O, Girard E, Chem Sci. 2017 Sep 1;8(9):5909-5917. doi: 10.1039/c7sc00758b. Epub 2017 Jun 6. PMID: 29619195

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