不可以。“现在分词完成体” 不能作定语，也不能作宾补。作定语可以使用不定式的完成体。本句不定式完成体作young adults 的定语。

不定式完成体作定语举例：

There is no need to have bought a new pair of shoes for me. 

没有必要给我买一双新鞋。

She's the only woman ever to have climbed Everest in winter. 

她是唯一在冬天爬过埃佛勒斯峰的妇女。

不定式完成体作宾补举例：

They stated the diamond to have been stolen.  

他们宣称钻石已被偷了。

来自《简明英汉词典》

They discovered the murderer to have run away.  

他们发现凶手已逃之夭夭。

来自《简明英汉词典》

I believed her to have done this on purpose. 

我相信她是故意这样做的。

They confessed themselves to have made a great mistake.  

他们承认自己犯了大错。

来自《简明英汉词典》