Draw the structure of the activated carbon group bound to thiamine pyrophosphate of the pyruvate dehydrogenase complex.

[answerhappygod]

Draw the structure of the activated carbon group bound to
thiamine pyrophosphate of the pyruvate dehydrogenase complex. Hint:
Keto-enol tautomerism may enter into the picture. You do not have
to consider stereochemistry. You should draw the full structure of
TPP except that you should replace the terminal pyrophosphate by
-O-R1. That is, the R1 group replaces all phosphate atoms attached
to the alcohol group of thiamine. The R group tool is located in
the charges and lone pairs drop-down menu. Be sure to include
charges on atoms where appropriate. (This excludes the species R1
described above.) Move Clear Erase Center Flip Horizontally Flip
Vertically Undo Redo Copy Paste Increase Scale Decrease Scale
Templates Set Label More Labels Attributes More Attributes Single
Bond Recessed Bond Protruding Bond Double Bond Other Bond More
Bonds Cyclohexane Ring Benzene Ring Other Ring More Rings Add
Carbon Chain Bracket