828-51-3 InChI=1/C11H16O2/c12-10(13)11-4-7-1-8(5-11)3-9(2-7)6-11/h7-9H,1-6H2,(H,12,13 adamantane-1-carboxylic acid tricyclo[3.3.1.1~3,7~]decane-1-carboxylic acid