polar molecule of furan c4h4o in several variants - organic chemistry concept. icon is on a white background.

aromatic atom atomic background benzen benzene black bond bran c4h4o carbon carcinogen chemical chemistry combination composite compound concept education educational element ether formula formulas furan gasoline heterocycle hydrogen icon illustration isolated lab liquid model molecular molecule organic oxygen polar pollution ring science several shape sign solvent structural structure symbol toluene2 toxic variants vector voc white