SMILES: C1=CC(=CC=C1CC2=CC=C(C=C2)N=C=O)N=C=O
Description: The molecule is a diisocyanate consisting of diphenylmethane with two isocyanate groups at the 4- and 4'-positions. It has a role as a hapten and an allergen. It derives from a hydride of a diphenylmethane.