You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (3-thiophen-2-yl-1,2,4-oxadiazol-5-yl)methyl 1-(3,4-dimethylphenyl)sulfonyl-4-hydroxypyrrolidine-2-carboxylate .
user
C20H21N3O6S2
assistant