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 (E)-3-[5-[(Z)-[3-(2-bicyclo[2.2.1]heptanyl)-4-oxo-2-sulfanylidene-1,3-thiazolidin-5-ylidene]methyl]furan-2-yl]prop-2-enoic acid .
user
C18H17NO4S2
assistant