问题: 甲氧苄氨嘧啶的化学名为
A: 5-[[3,4,5-trimethoxyphenyl]methyl]-2,6-pyrimidinediamine
B:5-[[3,4,5-trimethoxyphenyl]methyl]-4,6-pyrimidinediamine
C:5-[[3,4,5-trimethoxyphenyl]methyl]-2,4-pyrimidinediamine
D:5-[[3,4,5-trimethoxyphenyl]ethyl]-2,4-pyrimidinediamine
E:5-[[3,4,5-trimethyphenyl]methyl]-2.4-pyrimidinediamine