The present invention provides an antibody wherein a first heavy chain complementarity determining region (VH CDR1), a second heavy chain complementarity determining region (VH CDR2), and a third heavy chain complementarity determining region (VH CDR3) are SEQ ID NOs: 1, 2 and 7, respectively, and a first light chain complementarity determining region (VL CDR1), a second light chain complementarity determining region (VL CDR2), and a third light chain complementarity determining region (VL CDR3) are SEQ ID NOs: 4, 5 and 6, respectively.