You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(E)-2-cyano-3-(3-methoxy-5,6,7,8-tetrahydronaphthalen-2-yl)-N-[[(2S)-oxolan-2-yl]methyl]prop-2-enamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H24N2O3
assistant