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C-C
Alkane
C=C
Alkene
C≡C
Alkyne
Arene/Aromatic
Halide
Alcohol
Ether
Phosphate
Amine
Thiol
Sulfide
Disulfide
C=O
Carbonyl
Aldehyde
Ketone
Carboxylic Acid
Ester
Thioester
Amide
Acid Chloride
Imine
Nitrile
Nitro