challenge: What is the systematic name of the enzyme UDP-2-acetamido-3-amino-2,3-dideoxy-glucuronate N-acetyltransferase?
  
  A. Acetyl-CoA:UDP-2-acetamido-3-amino-2,3-dideoxy-beta-D-glucuronate N-acetyltransferase
  B. Acetyl-CoA:UDP-2-acetamido-3-amino-2,3-dideoxy-alpha-D-glucuronate N-acetyltransferase
  C. Acetyl-CoA:UDP-2-acetamido-3-amino-2,3-dideoxy-gamma-D-glucuronate N-acetyltransferase
  D. Acetyl-CoA:UDP-2-acetamido-3-amino-2,3-dideoxy-delta-D-glucuronate N-acetyltransferase
  Answer: 