A compound represented by following formula :wherein R11 and R12 each represents a substituent; m1 represents an integer of from 0 to 4; m2 represents an integer of from 0 to 6; Z2 represents an atomic group which forms an aryl ring or a heteroaryl ring; Z3 represents an atomic group which forms a nitrogen-containing heteroaryl ring; and n1 represents an integer of from 1 to 3. The support frame has a first U-shaped leg, a second U-shaped leg, a pipe connected to the first U-shaped leg and the second U-shaped leg, a tube connected to the first U-shaped leg and the second U-shaped leg, a first confining rod disposed on the first U-shaped leg and the second U-shaped leg, and a second confining rod disposed on the first U-shaped leg and the second U-shaped leg. The license store stores digital licenses on the computing device.