1-(2-Oxo-1-pyrrolidinyl)theobromine 2-Oxo-1-pyrrolidine-3,7-dimethylxanthine 2-Pyrrolidinone, 1-(3,7-dimethyl-3,7-dihydro-2,6-dioxo-1H-purin-1-yl)- 3,7-Dimethylxanthine 2-oxo-1-pyrrolidine Theobromine, 1-(2-oxo-1-pyrrolidinyl)- XH2477000