4-(3-chlorophenyl)-3-etoxycarbonyl-5-(1-(1,4-dioxaspiro(4,4)nonan-2-yl)methylenoxycarbonyl)-2,6-dimethyl-1,4-dihydropyridine
4-(3-chlorophenyl)-3-etoxycarbonyl-5-(1-(1,4-dioxaspiro(4,4)nonan-2-yl)methylenoxycarbonyl)-2,6-dimethyl-1,4-dihydropyridine