You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 2-[(1R)-6,7-dimethoxy-2-[4-(2-methylpropyl)phenyl]sulfonyl-3,4-dihydro-1H-isoquinolin-1-yl]acetate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C24H31NO6S
assistant