You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(E)-N-[3-[[2-(3-aminopropylamino)cyclohexyl]amino]propyl]-3-(4-hydroxyphenyl)prop-2-enamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H34N4O2
assistant