20 C 3.62650 1.24070 -0.13940 C 4.75160 0.45770 -0.15590 C 6.00450 1.03100 0.04600 C 6.12090 2.40210 0.26000 C 5.00160 3.19340 0.27290 C 3.73950 2.62090 0.07030 C 2.53740 3.46460 0.08370 C 1.57990 3.29170 -0.85450 C 1.83510 2.47720 -1.98560 O 2.95220 2.03520 -2.17740 N 7.14290 0.23190 0.03420 H 2.65490 0.79460 -0.29200 H 4.66580 -0.60610 -0.32120 H 7.09460 2.84280 0.41580 H 5.09270 4.25650 0.43930 H 2.41850 4.22320 0.84320 H 0.62020 3.77420 -0.74200 H 8.01620 0.62980 0.17500 H 7.06340 -0.72330 -0.11480 O 0.83910 2.19170 -2.85010