You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 2-(2,3-dihydro-1,4-benzodioxin-6-yl)-1-(4-ethylsulfonylpiperazin-1-yl)-2-methylpropan-1-one .
user
C18H26N2O5S
assistant