2,5-piperazinedione, 3-[(5-chloro-2-thienyl)methyl]-6-(1H-imidazol-4-ylmethyl)- 3-[(5-chloro-2-thienyl)methyl]-6-(1H-imidazol-4-ylmethyl)piperazine-2,5-dione InChI=1/C13H13ClN4O2S/c14-11-2-1-8(21-11)4-10-13(20)17-9(12(19)18-10)3-7-5-15-6-16-7/h1-2,5-6,9-10H,3-4H2,(H,15,16)(H,17,20)(H,18,19