You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as ethyl 1-[3-[3-(4-methylphenyl)-5-sulfanylidene-1H-1,2,4-triazol-4-yl]propanoylamino]cyclopentane-1-carboxylate using the IUPAC nomenclature.
user
C20H26N4O3S
assistant