You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethane;ethyl (E)-3-[benzyl-[(Z)-1-(3-chloro-4-propan-2-yloxyanilino)-3-oxobut-1-enyl]amino]prop-2-enoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H35ClN2O4
assistant