Photoresist Chemicals 2H-Benzo[a]furo[3,4-i]xanthene-3,11-dione,1,- 4,4a,5,6,6a,9,13,13a,13b-decahydro-4ahydroxy- 12-methoxy-4,4,6a,8,13b-pentamethyl-,(4aS,6aS,13aR,13bR)- Cas：87833-52-1 Molecular Formula：