You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5Z)-3-(2-phenoxyethyl)-2-sulfanylidene-5-(thiophen-2-ylmethylidene)-1,3-thiazolidin-4-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H13NO2S3
assistant