Rejea kifungu cha chini na kisha jibu swali baadaye katika lugha sawa na kifungu:  Passage: 2,6-Lutidine ni asili heterocyclic harufu kikaboni kiwanja na formula (CH3) 2C5H3N. Ni moja ya kadhaa dimethyl-substituted derivative ya pyridine. Ni umajimaji usio na rangi na wenye harufu kali.  Swali: Ni nini formula yake?
(CH3) 2C5H3N