You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 2-[[(3R)-2,3-dihydro-1,4-benzodioxine-3-carbonyl]amino]-4-phenylthiophene-3-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H19NO5S
assistant