Photoresist Chemicals 4H-Imidazol-4-one, 5-[(4-chlorophenyl)methylene]-3,5-dihydro-3-phenyl-2-(tetrahydro-4H-1, 4-selenazin-4-yl)-, (5Z)- Cas：686342-87-0 Molecular Formula：C20H18ClN3OSe