18 S 0.76024 0.19918 0.14946 C 2.58057 0.08956 0.02118 C 3.04496 0.03060 -1.44239 C 2.63183 -1.25354 -2.17038 C 3.18795 -1.29020 -3.58651 C 3.19118 1.29532 0.73302 H 0.69366 0.12766 1.48684 H 2.89478 -0.82216 0.54135 H 4.14093 0.09564 -1.46275 H 2.67623 0.90470 -1.99522 H 1.54092 -1.33670 -2.22333 H 2.99875 -2.12697 -1.61844 H 2.81643 -0.44539 -4.17449 H 2.88413 -2.21385 -4.08857 H 4.28164 -1.25105 -3.57993 H 2.89987 2.23944 0.25892 H 4.28559 1.23886 0.70876 H 2.89344 1.33212 1.78723