You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-[(2-carboxy-4-methylcyclohexyl)methoxyamino]ethyl]-6-methyl-2-oxo-1-azaspiro[2.5]octane-4-carboxylic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H32N2O6
assistant