You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-cyclopropyl-3-(2,2-dimethylpropyl)-N-(2-methylpiperidin-4-yl)-[1,2]oxazolo[5,4-b]pyridine-4-carboxamide;hydrochloride The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H31ClN4O2
assistant