You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-N-buta-1,3-dien-2-yl-2-(4-cyclopropylbutyl)-1-N-ethyl-4-N-methyl-4-N-(1-phenylethenyl)benzene-1,4-diamine is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H36N2
assistant