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 (4R)-N-(azepan-4-yl)-2-oxo-N-(pyridin-2-ylmethyl)-1,3-thiazolidine-4-carboxamide;hydrochloride ?
user
C16H23ClN4O2S
assistant