Photoresist Chemicals Spiro[3-cyclopentene-1,1′-[1H]pyrido[3,4-b]indole]-2,5-dione, 3′-acetyl-2′,3′,4′,9′-tetrahydro-3,4-diphenyl-, (3’S)- Cas：686776-65-8 Molecular Formula：C29H22N2O3