You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 4-[[6-bromo-3-(2-methoxyethoxycarbonyl)-2-methyl-1-benzofuran-5-yl]oxymethyl]-N-hydroxybenzeneamine oxide into its molecular formula.
user
C20H20BrNO7
assistant