If you wish to be deluged with chemistry, "aceta" means an acetyl group on the molecule, ie H-C=O . It joins onto the molecule via the C(arbon).

And, because I felt like it, here is the molecule in ASCII:
The acetyl group is in the bottom left, and "para" means the two things-that-aren't-hydrogen attached to the carbons on the ring are opposite each other.

     H  H-C=C-H
      \  /   \
      N-C    C-OH
     /  \\  //
 HO=C  H-C--C-H
    | 
    H