帮忙划分一下句子成分,分析一下长单句

Whiletheeffectofcowsmilkharvestedatdifferenttimehasnotbeentestedonhumansuptonow,takin... While the effect of cows milk harvested at different time has not been tested on humans up to now, taking melatonin drugs has been suggested to those who are struggling to fall asleep at night. 展开
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简化结构为:
While....., taking drugs has been suggested to sb.
while从句分析: 简化结构为:
while the effect has not been tested
cows milk harvested at different times 做了milk的定语

后面的 who .... 是suggested to的宾语从句
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