1-(t-Butyl)-10-methoxy-6-methyl-8-beta-(1-oxo-2-cyclopenten-3-yloxymethyl)ergoline 113702-04-8 2-Cyclopenten-1-one, 3-(((8-beta)-1-(1,1-dimethylethyl)-10-methoxy-6-methylergolin-8-yl)methoxy)-