1-chloro-9-oxo-9H-xanthene-4-carbaldehyde 9H-xanthene-4-carboxaldehyde, 1-chloro-9-oxo- InChI=1/C14H7ClO3/c15-10-6-5-8(7-16)14-12(10)13(17)9-3-1-2-4-11(9)18-14/h1-7