Alkyl, Having At Least Eight Carbons Specified, Or Plural Alkyl Chains, Each Having At Least Five Carbons Specified, Bonded Directly To A Ring, Which Ring Is Attached Directly Or Indirectly To An Acyclic Carbon Chain, Which Chain Is Bonded Directly To A Urea Or Carboxamide Nitrogen That Is Between The Chain And An Additional Ring Patents (Class 534/648)