InChI=1/C16H18O2S/c1-5-14-13(8-6-7-12(2)3)9-10-15(14)19-11-16(17)18-4/h1,8,15H,9-11H2,2-4H acetic acid, [[2-ethynyl-3-(4-methyl-1,2,3-pentatrienyl)-2-cyclopenten-1-yl]thio]-, methyl ester methyl {[2-ethynyl-3-(4-methylpenta-1,2,3-trien-1-yl)cyclopent-2-en-1-yl]thio}acetate