You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-oxo-2-(2-thiophen-2-ylethylamino)ethyl] (5S,7R)-3-chloroadamantane-1-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H24ClNO3S
assistant