InChI=1/C18H15ClO5/c1-11(18(22)23)24-14-4-2-3-13(10-14)16(20)7-5-12-6-8-17(21)15(19)9-12/h2-11,21H,1H3,(H,22,23)/p-1/b7-5+/t11-/m0/s1/fC18H14ClO5/q-1 CC099C5F2026273E