4-(2,6-diphenylpyran-4-ylidene)-2,6-diphenylpyran

N-[1-phenyl-2-(3-phenyl-1,2-oxazol-5-yl)ethylidene]hydroxylamine

5-hydroxy-5-(β-hydroxyimino-β-phenylethyl)-3-phenyl-2-isoxazoline