You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3S)-8-methoxy-N-methyl-N-(quinolin-8-ylmethyl)-3,4-dihydro-2H-chromene-3-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H22N2O3
assistant