You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (E)-3-[3-(dibutylamino)phenyl]-1-[2-(4-methylpiperazin-1-yl)phenyl]prop-2-en-1-one by IUPAC nomenclature, provide its molecular formula.
user
C28H39N3O
assistant