You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule [2-(9-methylphosphanylcarbonyloxy-8-oxo-5,9,10,11-tetrahydronaphtho[2,3-c]isochromen-3-yl)-2-oxoethyl] ethenylphosphanylformate .
user
C24H22O7P2
assistant