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 N-(2,3-dihydro-1,4-benzodioxin-6-yl)-N-(thiophen-2-ylmethyl)-2-[3-(trifluoromethyl)piperidin-1-yl]acetamide ?
user
C21H23F3N2O3S
assistant