5,10-dioxo-5,10-dihydroanthra[2,3-d][1,3]thiazol-9-yl acetate InChI=1/C17H9NO4S/c1-8(19)22-13-4-2-3-9-15(13)17(21)11-6-14-12(18-7-23-14)5-10(11)16(9)20/h2-7H,1H anthra[2,3-d]thiazole-5,10-dione, 9-(acetyloxy)-