18 comment:c C 0.2755610 0.9657120 0.4459220 C -1.5303169 0.2494340 -0.1839280 C -1.4792800 -1.2347530 -0.2420250 C 0.1904350 -1.8344570 0.3093300 C 1.1820860 -1.0938250 -0.4626220 C 1.2113490 0.2541630 -0.4053840 H -2.1896560 0.6669430 0.5807840 H -2.1566961 -1.7378680 0.4529160 H 0.2348320 -2.9195349 0.1891900 H 1.7425940 -1.6111950 -1.2389470 H -1.5904239 -1.6563710 -1.2433070 H -1.6459270 0.7643930 -1.1390719 H 0.1617660 -1.5806119 1.3730720 H 0.1864900 0.5689220 1.4582490 H 1.8030760 0.8283960 -1.1182671 N 0.3752360 2.3865099 0.4755430 H 0.4473970 2.7873330 -0.4532830 H -0.4190930 2.8043311 0.9455900