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 5,5-diethyl-2-(3-methyl-2,3-dihydro-1,4-benzoxazin-4-yl)-1,3-thiazol-4-one .
user
C16H20N2O2S
assistant