You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-amino-7,7-dimethyl-N-(1-methylcyclobutyl)-2-oxabicyclo[3.2.0]heptane-6-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C14H24N2O2
assistant