You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
12-N-[(3E,5Z)-hepta-1,3,5-trien-3-yl]-6-N,6-N,12-N-triphenylchrysene-6,12-diamine is the IUPAC name of a molecule. Please give its molecular formula.
user
C43H34N2
assistant