Citrate
Citric acid
2-hydroxy-1,2,3-propanotricarboxilic acid
2-hydroxytricarbalilic acid

C6H8O7

This molecule contains the follow organic groups: carboxilic acid(that names the molecule) and alcohol.

Citrate cycle (3D)
Glyoxylate and dicarboxylate metabolism (Kyoto University)
Reductive carboxylate cycle (CO2 fixation) (Kyoto University)