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 N-(4-methylphenyl)-2-[(3E)-2-oxo-3-(4-oxo-2-sulfanylidene-1,3-thiazolidin-5-ylidene)indol-1-yl]acetamide .
user
C20H15N3O3S2
assistant