Library structure in gradle android project

I am trying to develop an android project using gradle as building tool. The build is successful and apk file is created but I am unable to find where my dependencies are stored within it.
I am using NexusIQ jenkins plugin to scan my android project (I am not sure if it works) and for that I am trying to copy all my dependencies to lib folder usinng a copy task so that those can be scanned by NexusIQ. But I am unable to provide source for copy task.
Could anyone please help?