You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[(4-benzylpiperazin-1-yl)-(ethylamino)methylidene]amino]-N-methyl-N-(2,2,2-trifluoroethyl)acetamide;hydroiodide is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H29F3IN5O
assistant