You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-ethenyl-2-ethyl-N-[2-[(Z)-2-methyl-1-[(Z)-[(Z)-2-pyridin-2-ylbut-2-enylidene]amino]but-1-enoxy]ethyl]aniline by IUPAC nomenclature, provide its molecular formula.
user
C26H33N3O
assistant