You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl (2S,3R)-3-cyclopropyl-3-[2-[5-(2-ethoxy-5-fluoropyridin-4-yl)-6-methylpyrazin-2-yl]-8-fluoro-3,4-dihydro-2H-chromen-7-yl]-2-methylpropanoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C29H31F2N3O4
assistant