Compilation issue with instantiating function template

Consider the following code:

#include <iostream>

struct S {
  void f(const char* s) {
    std::cout << s << '\n';
  }
};

template <typename... Args, void(S::*mem_fn)(Args...)>
void invoke(S* pd, Args... args) {
  (pd->*mem_fn)(args...);
}

int main() {
  S s;
  void(*pfn)(S*, const char*) = invoke<const char*, &S::f>;
  pfn(&s, "hello");
}

When compiling the code, clang gives the following error:

main.cpp:16:33: error: address of overloaded function 'invoke' does not match required type 'void (S *, const char *)'
  void(*pfn)(S*, const char*) = invoke<const char*, &S::f>
                                ^~~~~~~~~~~~~~~~~~~~~~~~~~
main.cpp:10:6: note: candidate template ignored: invalid explicitly-specified argument for template parameter 'Args'
void invoke(S* pd, Args... args) {
     ^
1 error generated.

The message seems to suggest that the template instantiation invoke<const char*, &S::f> has failed. Could somebody give me some clues as to why is this? I believe it has something to do with the parameter pack.