You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[(3aR,4R,7aR)-2,3,3a,4,5,6,7,7a-octahydro-1-benzofuran-4-yl]-3-[4-[(R)-methylsulfinyl]phenyl]urea The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H22N2O3S
assistant