Expression "interest" in Section 245(6A) fastens liability to pay interest only when tax payable in pursuance of an order under Section 245D(4) is not paid within specified time and which levy is different from liability to pay interest under Section 234B or under Section 245D(2) - Consequent upon it, terminal point for levy of interest under Section 234B would be up to date of Order under Section 245D(1).