Character Creator only works with Character Creator files as well as specific DAZ or Poser characters that are imported using the Transformer function. You will not be able to import a model from Cinema 4D.
Also, CrazyTalk only supports Character Creator 1 or 2 models. CC3 in not supported.
As CrazyTalk only uses the face, it might be easier to render the face from your character in Cinema 4D and then use that to create a 3D model in CrazyTalk.