3-[(2R)-2-amino-2-phenylethyl]-1-[(2-bromophenyl)methyl]-5-(2-fluorophenyl)-6-methylpyrimidine-2,4-dione 3-[(2R)-2-amino-2-phenyl-ethyl]-1-[(2-bromophenyl)methyl]-5-(2-fluorophenyl)-6-methyl-pyrimidine-2,4-dione 3-[(2R)-2-amino-2-phenyl-ethyl]-1-(2-bromobenzyl)-5-(2-fluorophenyl)-6-methyl-pyrimidine-2,4-quinone