2H-thiopyran-5-carboxaldehyde, 3,4-dihydro-4-oxo-6-(2-propynylthio)-2-(2-thienyl)- 4-oxo-6-(prop-2-yn-1-ylthio)-2-(2-thienyl)-3,4-dihydro-2H-thiopyran-5-carbaldehyde InChI=1/C13H10O2S3/c1-2-5-17-13-9(8-14)10(15)7-12(18-13)11-4-3-6-16-11/h1,3-4,6,8,12H,5,7H