You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[1-[2-[(4-methylpiperazin-1-yl)methyl]pyridin-4-yl]ethenyl]-6-(1-methylpyrazol-4-yl)isoquinolin-3-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H29N7
assistant