Spiro(6H-cyclopenta(b)pyridine-6,3'-(3H)pyrrolo(2,3-b)pyridine)-3-carboxamide,1',2',5,7-tetrahydro-N-((3S,5S,6R)-6-methyl-2-oxo-5-phenyl-1-(2,2,2-trifluoroethyl)-3-piperidinyl)-2'-oxo-,(3'S);Ubrogepant [USAN](3S)-N-[(3S,5S,6R)-6-methyl-2-oxo-5-phenyl-1-(2,2,2-trifluoroethyl)piperidin-3-yl]-2-oxospiro[1H-pyrrolo[2,3-b]pyridine-3,6'-5,7-dihydrocyclopenta[b]pyridine]-3'-carboxamide;MK-1602;(3'S)-N-((3S,5S,6R)-6-Methyl-2-oxo-5-phenyl-1-(2,2,2-trifluoroethyl)piperidin-3-yl)-2'-oxo-1',2',5,7-tetrahydrospiro(cyclopenta(b)pyridine-6,3'-pyrrolo(2,3-b)pyridine)-3-carboxamide;