A、<p><span style="font-size: 10.5pt; font-family: 宋体;">酚羟基</span></p>
B、<p><span style="font-size: 10.5pt; font-family: 宋体;">芳伯氨基</span></p>
C、<p><span style="font-size: 10.5pt; font-family: 宋体;">丙二酰脲母核</span></p>
D、<p><span style="font-size: 10.5pt; font-family: 宋体;">羧基</span></p>
E、<p><span style="font-size: 10.5pt; font-family: 宋体;">羰基</span></p>