15 S 1.46022 -0.88771 -0.16810 C 0.81736 -1.71937 1.32194 C 1.77570 -2.74755 1.89530 C 2.95983 -0.07717 0.47873 C 2.67090 0.93175 1.57568 H -0.11018 -2.22355 1.02873 H 0.54445 -0.97476 2.07589 H 2.07112 -3.48583 1.14332 H 1.29047 -3.28623 2.71588 H 2.67657 -2.28245 2.30448 H 3.42952 0.44088 -0.36482 H 3.67438 -0.83254 0.81978 H 1.93893 1.67878 1.25309 H 3.59150 1.46244 1.84028 H 2.30436 0.45056 2.48647