You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (E)-3-(5-methoxy-2,3-dihydro-1,4-benzodioxin-7-yl)-1-(4-methyl-6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl)prop-2-en-1-one ?
user
C20H21NO4S
assistant