Photoresist Chemicals Pyrrolidine, 1-(2,2-difluoro-3-hydroxy-3-methyl-1-oxobutyl)-2-[5-[2-(3-pyridinyl)ethyl]- 1,2,4-oxadiazol-3-yl]-, (2S)- Cas：681239-38-3 Molecular Formula：C18H22F2N4O3