RenG: To answer the comment below : white is not captured after B6 (white C7)
The sequence is really wrong, after D6 the best answer should be to capture G3. And after D6-C6 the best should be go out with G3.
d4rkm4tter: In the small avalance, D6-C6 was the joseki, but with the additional exchange at F2, taking is huge. Let's assume white plays the joseki. D6-C6-D5 looks indeed troublesome if white takes at G3 and black can't capture anything. D6-C6-G3 should be correct too, even though there is a tesuji at E6.
To answer the comment below : white is not captured after B6 (white C7) The sequence is really wrong, after D6 the best answer should be to capture G3. And after D6-C6 the best should be go out with G3.