Ключевые слова: 2d, abstract, aromatic, atom, atomic, ball, benzene, bond, c7h8, carbon, chain, chemical, chemistry, compound, connect, connection, cycle, education, element, formula, hydrocarbon, icon, illustration, isolated, lab, laboratory, liquid, methylbenzene, model, molecular, molecule, oil, organic, phenylmethane, science, sign, skeletal, solvent, stick, structural, structure, study, substance, symbol, toluene, toluene icon, white,