You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-6-ethyl-N-[(1S)-1-[5-(2-methoxy-1,8-naphthyridin-3-yl)-1,3-oxazol-2-yl]-7-oxononyl]-6-azaspiro[2.5]octane-2-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C31H41N5O4
assistant