You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[1-(5-methyl-1,2,4-oxadiazol-3-yl)cyclohexyl]amino]-N-(2-methyl-1-thiophen-2-ylpropyl)acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H28N4O2S
assistant