You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 5-[[4-[[(2S)-1-methoxy-4-methylsulfanyl-1-oxobutan-2-yl]carbamoyl]morpholin-2-yl]methoxy]pyridine-3-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H27N3O7S
assistant