You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2,6-dimethoxyphenyl)-[4-[(5-methyl-1,3,4-oxadiazol-2-yl)methyl]piperazin-1-yl]methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H22N4O4
assistant