Which of following coenzyme is not a part of Pyruvate Dehydrogenase Complex?
PDH complex consist of 3 Enzymes and 5 Coenzymes.
Three enzymes are:

Pyruvate  Dehydrogenase
Dihydrolipoyl Transacetylase, the prosthetic group is oxidised Lipomide
Dihydrolipoyl Dehydrogenase, contains FAD.
Coenzymes 
Lipoic acid 
Coenzyme A
FAD
NAD ++
Thiamin Diphosphate

Harper 30th edition Pg- 169-175
Lipoic Acid
FAD
Thiamine pyrophosphate
Vitamin B3