3-ethyl-5-(3-ethyl-4-oxo-2-sulfanylidene-1,3-thiazolidin-5-yl)-2-sulfanylidene-1,3-thiazolidin-4-one

(5Z)-3-ethyl-5-(pyridin-2-ylmethylidene)-2-sulfanylidene-1,3-thiazolidin-4-one