You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(2,3-dihydro-1,4-benzodioxin-6-ylsulfanyl)-N-[[1-(dimethylamino)cyclopentyl]methyl]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H26N2O3S
assistant