Methanesulfonic acid, 1,1,1-trifluoro-, 1′,3′-dihydro-1′,3′,3′-trimethyl-6-nitro-8-[[(trifluoromethyl)sulfonyl]oxy]spiro[2H-1-benzopyran-2,2′-[2H]indol]-5′-yl ester [ 2001087-96-1 ]