You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2,5-dimethyl-1-(5-methyl-1,2-oxazol-3-yl)-N-piperidin-4-ylpyrrole-3-carboxamide;hydrochloride is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H23ClN4O2
assistant