4,4-dihydroxy-2-[4-(trifluoromethyl)phenyl]piperidinium InChI=1/C12H14F3NO2/c13-12(14,15)9-3-1-8(2-4-9)10-7-11(17,18)5-6-16-10/h1-4,10,16-18H,5-7H2/p+ piperidinium, 4,4-dihydroxy-2-[4-(trifluoromethyl)phenyl]-