3-phenylspiro[5,7-dihydrocyclopenta[e][1,3]oxazine-6,1'-cyclohexane]-2,4-dione

6,6-dimethyl-3-phenyl-2-phenylimino-5,7-dihydrocyclopenta[e][1,3]oxazin-4-one

3-phenyl-2-phenyliminospiro[5,7-dihydrocyclopenta[e][1,3]oxazine-6,1'-cyclohexane]-4-one

1-cyano-N,N'-diphenylmethanimidamide

N,1-diphenyltetrazol-5-amine