222854-84-4

1,3,5,2,4-Trioxadisilocino7,6-bpyrrole-7(6H)-carboxylic acid, 8-(1-cyano-2-hydroxyethenyl)tetrahydro-2,2,4,4-tetrakis(1-methylethyl)-, 1,1-dimethylethyl ester, (6aR,8R,9aS)-