You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[4-(5,6-dihydro-1,4,2-dioxazin-3-yl)phenyl]-1-[5-(dimethylamino)-4-methyl-1,3-thiazol-2-yl]-1-methylurea The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H21N5O3S
assistant