a class of organic compounds that contain a chroman ring system, which is a six-membered ring fused to a benzene ring.
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dimethyl 2-acetyl-3-(cyclohexylamino)-5-oxacyclopenta[a]naphthalen-4(2H)-one-1,2-dicarboxylate
4-oxo-2-phenyl-4H-chromen-7-yl pivalate
