Photoresist Chemicals Propanoic acid, 2-[4-[[[[5-[4-(1,1-dimethylethyl)phenyl]-1-methyl-1H-pyrazol-3-yl]carbonyl ]amino]methyl]-2,6-dimethylphenoxy]-2-methyl-, ethyl ester Cas:852815-45-3 Molecular Formula:C30H39N3O4