| 1-dimethylethyl)-10-methoxy-6-methyl- 1-( (8-beta)-ergoline-8-methano |
| (8-beta)-1-(1,1-dimethylethyl)-10-methoxy-6-methylergoline-8-methanol |
| 1-(t-butyl)-10-methoxy-6-methyl-8-beta-hydroxymethylergoline |
| 1-dimethylethyl)-10-methoxy-6-methyl-1-( (8-beta)-ergoline-8-methano |
