Photoresist Chemicals Heptane, 1,1′-[[1,1,2,2-tetrakis(trifluoromethyl)-1,2-ethanediyl]bis(oxy)]bis[4,4,5,5, 6,6,7,7,7-nonafluoro- Cas:878189-73-2 Molecular Formula:C20H12F30O2