Photoresist Chemicals 6(2H)-Benzofuranone,3,3a,4,5-tetrahydro-5,7- dimethoxy-2-methyl-3a-(2-propenyl)-3-(3,4,- 5-trimethoxyphenyl)-,(2R,3S,3aS,5S)-rel- Cas：85541-04-4 Molecular Formula：