A Compound represented by the following general formula (1):
wherein R
1a
, R
1b
, R
1c
and R
1d
each independently represent hydrogen, etc.; R
2
represents optionally substituted phenyl, etc.; R
3
represents optionally substituted C6-10 aryl, etc.; and Z
1
and Z
2
each independently represent hydrogen
or salts thereof or hydrates of the foregoing.
以下是通式(1)表示的化合物:其中R1a,R1b,R1c和R1d各自独立地表示氢等;R2表示可选取代的苯基等;R3表示可选取代的C6-10芳基等;Z1和Z2各自独立地表示氢或其盐或其
水合物。