Finding Mc into a Mc

Hello,
I’m Scanning each frames of a movieclip, and I’m wondering how should I know that into a given frame there is another Movieclip

I mean into a Movie clip with 11 frames, at frame 2 there is a MoviClip into it nammed mc2.
how should i get that at MymovieClip.currentLabel (if currentlabel is frame 2) there is another movieclip nammed mc2 in this same frame ?