4'-Ethyl 1,2-dimethyl 1',5-dibenzyl-4,4-dicyano-2'-oxo-5'-phenyl-1',2',4a,5-tetrahydro-4 H -spiro[benzo[4,5]imidazo[1,2- a ]pyridine-3,3'-pyrrole]-1,2,4'-tricarboxylate. - Moroz, Anna A.; Dmitriev, Maksim V.; Maslivets, Andrey N. (Molbank, 2026)