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 1-[4-(2,3-dihydro-1,4-benzodioxin-6-ylsulfonyl)piperazin-1-yl]-2-imidazo[2,1-b][1,3]thiazol-6-ylethanone .
user
C19H20N4O5S2
assistant