You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[2-(4,5-dicyano-1-methylimidazol-2-yl)oxypropan-2-yloxy]-1-methylimidazole-4,5-dicarbonitrile is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H12N8O2
assistant