You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5,7-dimethyl-1-benzofuran;6,8-dimethyl-2,3-dihydro-[1,4]dioxino[2,3-b]pyridine;5,7-dimethyl-2,3-dihydrofuro[3,2-b]pyridine;4,7-dimethyl-2,3-dihydrofuro[3,2-c]pyridine;5,7-dimethylfuro[3,2-b]pyridine;ethane;6-methoxy-2,5-dimethyl-3H-isoindol-1-one;4-methoxy-2,5-dimethylpyrimidine;2-methoxy-1,3,4,5-tetramethylbenzene;2-methoxy-3,5,6-trimethylpyridine;3-methoxy-2,4,6-trimethylpyridine;4-methoxy-2,3,5-trimethylpyridine;7-methyl-5H-furo[3,2-c]pyridin-4-one;4,5,7-trimethyl-1,3-benzodioxole;5,6,8-trimethyl-2,3-dihydro-1,4-benzodioxine;4,5,7-trimethyl-2,3-dihydro-1-benzofuran;4,5,7-trimethyl-2,3-dihydrofuro[2,3-c]pyridine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C172H250N12O21
assistant