You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule [(1R)-1-[5-[3-[(5-phenyl-1,2-oxazole-3-carbonyl)amino]cyclobutyl]-1,3,4-oxadiazol-2-yl]ethyl] acetate .
user
C20H20N4O5
assistant