You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by [2-(2-ethylpyridin-4-yl)-6-[(3R)-3-methylmorpholin-4-yl]pyrimidin-4-yl]imino-dimethyl-oxo-lambda6-sulfane ?
user
C18H25N5O2S
assistant