You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-phosphonato-N-[(2E,6E,10E)-3,7,11,15-tetramethylhexadeca-2,6,10,14-tetraenoxy]propanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H38NO5P-2
assistant