5'α-benzyl-10,12'-dihydroxy-2'-methyl-(10β)-9,10-dihydro-ergotamane-18,3',6'-trione
5'α-benzyl-10,12'-dihydroxy-2'-methyl-(10α)-9,10-dihydro-ergotamane-18,3',6'-trione
5'α-benzyl-12'-hydroxy-2'-methyl-(8βH,10β)-9,10-dihydro-ergotamane-18,3',6'-trione
5'α-benzyl-12'-hydroxy-2'-methyl-(8βH,10α)-9,10-dihydro-ergotamane-18,3',6'-trione
5'α-benzyl-10,12'-dihydroxy-2'-methyl-(8βH,10β)-9,10-dihydro-ergotamane-18,3',6'-trione