A 25-year-old woman with a history of insulin-dependent diabetes mellitus for the last 15 years was registered in the antenatal clinic. Following evidence of fetal distress at 34th week of gestation, caesarian section was performed and a male baby was delivered. At birth, the baby presented with tachypnoea (respiratory rate > 70 per minute), expiratory grunting, flaring of alae nasi, retraction of ribs and sternum and cyanosis. Radiological examination showed prominence of bronchial air shadows and a generalized opacity (ground glass appearance). Biochemical analysis of blood sample did not show any abnormal results. The baby was shifted to the neonatology unit for further management. Q.1. What is the most probable diagnosis? State the underlying biochemical lesion in this condition.