You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance ethyl 2-[[(3R)-2,3-dihydro-1,4-benzodioxine-3-carbonyl]amino]-4,5-dimethylthiophene-3-carboxylate .
user
C18H19NO5S
assistant