222631-11-0

5H-1,3-Dioxolo4,5-cpyrrole-5-carboxylic acid, 4-1-cyano-2-(2-ethoxy-2-oxoethyl)aminoethenyl-6-(1,1-dimethylethyl)dimethylsilyloxymethyltetrahydro-2,2-dimethyl-, 1,1-dimethylethyl ester, (3aS,4S,6R,6aR)-