127653-93-4 6-(5-(1-Propenyl)-11H-benzo(5,6)cyclohepta(1,2-c)pyridin-11-ylidene)hexanoic acid Hexanoic acid, 6-(5-(1-propenyl)-11H-benzo(5,6)cyclohepta(1,2-c)pyridin-11-ylidene)-