This Convertible Promissory Note shall bear interest at the rate of thirty-three hundredths of one percent (0.33%) per annum unless and until the occurrence of an Event of Default (as defined below) occurs. After an Event of default, this Convertible Promissory Note shall bear interest at a floating rate of interest which shall be ten (10) percentage points over the rate of interest announced from time to time by Citibank, N.A. as the rate of interest that it charges to its most creditworthy commercial customers. Interest shall be computed on the basis of a 360-day year of twelve 30-day months and shall accrue and be payable on the Maturity Date. Interest shall be compounded annually after an Event of Default, but shall not be compounded prior thereto.