1,1-DIMETHYLETHYL 2'-(METHYLTHIO)-6'-OXOSPIRO(CYCLOHEXANE-1,9'(6'H)-PYRAZINO(1',2':1,5)PYRROLO(2,3-D)PYRIMIDINE)-7'(8'H)-CARBOXYLATE
1,1-dimethylethyl 2'-(methylthio)-6'-oxospiro(cyclohexane-1,9'(6'h)-pyrazino(1',2':1,5)pyrrolo(2,3-d)pyrimidine)-7'(8'h)-carboxylate