求翻译：但从有效化学物质组中也可能找到单个的有效成分（即先导化合物）就能达到整体化学物质组的功效水平，因此化学物质组学也能筛选到先导化合物（如果原方中确实存在的话），相当于有效化学成分群的特例。是什么意思？

However, effective group of chemical substances may also find the single active ingredient (ie, lead compounds) can achieve the level of the effectiveness of the overall chemicals group, the chemicals group learning can be screened lead compound (if the original prescription is indeed one exists) ,

But in terms of the efficient chemical substances in Group may also find the individual active ingredients (i.e. , pilot compounds) will be able to achieve overall chemical substances group chemical substances, and therefore the effectiveness level school is also able to filter the pilot compounds (

But also possibly found the single effective component from the effective chemical substance group (i.e. forerunner compound) to be able to achieve the overall chemical substance group the effect level, therefore the chemical substance group study also can screen the forerunner compound (if in origi

But effective chemicals may also be found in a single set of components (that is, lead compounds) will be able to achieve the overall level of effectiveness of the chemicals group, the chemicals group will also screening lead compounds (if the original does exist), equivalent to the special case of