You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2E)-7-[(3,5-dimethylpiperidin-1-yl)methyl]-6-hydroxy-2-[(4-propan-2-ylphenyl)methylidene]-1-benzofuran-3-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H31NO3
assistant