You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named N-[4-(2,3-dihydro-1-benzofuran-5-yl)-1,3-thiazol-2-yl]-2H-chromene-3-carboxamide is given. What is its corresponding molecular formula?
user
C21H16N2O3S
assistant