1 AQ0 2-(cis-4-azidocyclohexyl)-4h-naphtho[1,2-B]pyran-4-one 1.000 2 BHF 2-phenyl-4h-benzo[H]chromen-4-one 0.875 3 A1LWJ (3r)-3-phenyl-2,3-dihydrobenzo[f]chromen-1-one 0.731 4 FLN 2-phenyl-4h-chromen-4-one 0.708