(Z)-(1-oxo-3,4-dihydronaphthalen-2(1H)-ylidene)methyl trifluoromethanesulfonate InChI=1/C12H9F3O4S/c13-12(14,15)20(17,18)19-7-9-6-5-8-3-1-2-4-10(8)11(9)16/h1-4,7H,5-6H2/b9-7 methanesulfonic acid, trifluoro-, (Z)-(3,4-dihydro-1-oxo-2(1H)-naphthalenylidene)methyl ester