You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name 2-chloro-N-(3,4-difluorophenyl)-3-[2-[1-(3-methyl-1,2,4-oxadiazol-5-yl)ethylamino]-2-oxoacetyl]-5,6,7,8-tetrahydroindolizine-1-carboxamide ?
user
C22H20ClF2N5O4
assistant