A.
5-[[3,4,5-trimethoxyphenyl]methyl]-2,6-pyrimidine diamine
B.
5-[[3,4,5-trimethoxyphenyl]methyl]-4,6-pyrimidine diamine
C.
5-[[3,4,5-trimethoxyphenyl]methyl]-2,4-pyrimidine diamine
D.
5-[[3,4,5-trimethoxyphenyl]ethyl]-2,4-pyrimidine diamine
E.
5-[[3,4,5-trimethylphenyl]methyl]-2,4-pyrimidine diamine