You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2Z,4E,6E,8E)-3,7-dimethyl-N-phenyl-9-(2,3,6,6-tetramethylcyclohexen-1-yl)nona-2,4,6,8-tetraenamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H35NO
assistant