3,3',5-trihydroxybiphenyl-2-carboxylic acid InChI=1/C13H10O5/c14-8-3-1-2-7(4-8)10-5-9(15)6-11(16)12(10)13(17)18/h1-6,14-16H,(H,17,18 [1,1'-biphenyl]-2-carboxylic acid, 3,3',5-trihydroxy-