You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(Z)-N-[(2S,3R)-1-(3,5-difluorophenyl)-3-hydroxy-4-[(3-iodophenyl)methylamino]butan-2-yl]-2-phenyl-3-pyridin-4-ylprop-2-enamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C31H28F2IN3O2
assistant