You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3,4-dimethyl-10-[3-[[(3Z,5Z)-2-methylidenehepta-3,5-dienyl]amino]propyl]acridin-9-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H30N2O
assistant