You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 2-[2,3-dihydro-1,4-benzodioxin-6-yl(methylsulfonyl)amino]-N-[(1R)-1-(2,5-dimethylphenyl)ethyl]acetamide ?
user
C21H26N2O5S
assistant