You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 3-[[(2,2-dimethylthiomorpholin-4-yl)-(ethylamino)methylidene]amino]-N-(6-methylpyridin-2-yl)propanamide into its molecular formula.
user
C18H29N5OS
assistant