The present invention relates to compounds of formula : in which Y, Y, R, R 2, R 3 and R 4 are defined in the Summary of the Invention; capable of inhibiting the activity of BCR-ABL1 and mutants thereof. The battery system includes a master unit for receiving information on the voltages respectively of the one or more single cells from the module monitoring control units via the communications level converter circuits. The rotor has an arm portion extending outwardly in a direction perpendicular to the axis of the rotor, and a pin portion engaging with the shutter blade and provided in the arm portion to stand. When the LECS communicating with the terminal connected to the first ELAN receives a request for obtaining the ATM address of the second ELAN to which the terminal was previously connected, the LECS obtains the ATM address of the LECS of another ELAN of the next hop according to the IP routing information.