C2O2(NH2)2)

from The Collaborative International Dictionary of English v.0.48

Oxamide \Ox*am"ide\, n, [Oxalic + amide.] (Chem.)
   A white crystalline neutral substance ({C2O2(NH2)2)} obtained
   by treating ethyl oxalate with ammonia. It is the acid amide
   of oxalic acid. Formerly called also {oxalamide}.
   [1913 Webster]