You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-(dimethylamino)-N-[3-[[[ethylamino-(2-piperidin-1-ylethylamino)methylidene]amino]methyl]phenyl]acetamide;hydroiodide into molecular formula.
user
C21H37IN6O
assistant