Photoresist Chemicals Spiro[azuleno[4,5-b]furan-3(2H),2′-oxetan]-2- one,decahydro-4-hydroxy-4′-methyl-6,9-bis- (methylene)-,(2’S,3aR,4S,4’R,6aR,9aR,9bR)- Cas：99305-07-4 Molecular Formula：