You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-methyl-N-[[3-(2-methylpropyl)-2-methylsulfonylimidazol-4-yl]methyl]-1-quinolin-4-ylmethanamine by IUPAC nomenclature, provide its molecular formula.
user
C20H26N4O2S
assistant