6,8-dimethyl-8,9-didehydroergoline InChI=1/C16H18N2/c1-10-6-13-12-4-3-5-14-16(12)11(8-17-14)7-15(13)18(2)9-10/h3-6,8,13,15,17H,7,9H2,1-2H ergoline, 8,9-didehydro-6,8-dimethyl-