21

C          0.74450        1.26900       -0.30100
C          1.46620        0.03790        0.23510
C         -0.70840        1.32130        0.15710
C          0.72210       -1.24930       -0.11340
C         -1.45850        0.02540       -0.15610
C         -0.73790       -1.23160        0.35570
C         -0.85680       -1.37960        1.87030
O         -1.34290       -0.55310        2.62450
O         -0.39830       -2.56880        2.32620
H          0.78000        1.26380       -1.39720
H          1.26690        2.17400        0.02990
H          1.57530        0.11860        1.32320
H          2.47880       -0.00200       -0.18280
H         -1.21540        2.16240       -0.32920
H         -0.74020        1.52170        1.23410
H          1.26570       -2.10120        0.30950
H          0.73960       -1.38220       -1.20310
H         -1.57090       -0.05560       -1.24510
H         -2.47200        0.08330        0.25830
H         -1.26070       -2.09930       -0.06870
H         -0.07160       -3.16700        1.62990
