The benzene ring is also seen in other compounds.
苯环在其他化合物中也可以看见。
The benzene ring is also seen in other compounds .
苯环在其他化合物中也可以看见。
D ring is not a necessary backing part which has biological activity in these compounds.
环不是该类化合物具有生物活性的必需骨架部分。
D ring is not a necessary backing part which has biological activity in these compounds.
环不是该类化合物具有生物活性的必需骨架部分。
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