preferred_name: 2-((6-((3R)-3-((3-((2-CYANO-5-FLUOROPHENYL)METHYL)-1,2,3,6-TETRAHYDRO-1-METHYL-2,6-DIOXO-4-PYRIMIDINYL)AMINO)-1-PIPERIDINYL)-3,4-DIHYDRO-3-METHYL-2,4-DIOXO-1(2H)-PYRIMIDINYL)METHYL)-4-FLUOROBENZONITRILE