You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-cyclopropyl-4-[[ethylamino-[2-(4-fluorophenoxy)ethyl-methylamino]methylidene]amino]butanamide;hydroiodide is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H30FIN4O2
assistant