20 F 2.67695 -0.30123 -1.22893 C 2.30692 0.05629 0.02947 C 2.86365 -0.95211 1.02007 C 4.39284 -0.96450 1.01001 C 4.94717 -1.97754 2.01284 C 6.47565 -1.99651 1.99835 C 7.03012 -3.00323 2.99351 H 1.21385 0.07338 0.06452 H 2.68237 1.06573 0.22246 H 2.49355 -1.95030 0.75939 H 2.49862 -0.71205 2.02520 H 4.77007 0.03596 1.25319 H 4.75319 -1.21000 0.00393 H 4.56525 -2.97871 1.77393 H 4.59213 -1.72941 3.02102 H 6.86224 -1.00022 2.24092 H 6.83485 -2.24870 0.99404 H 6.71519 -2.76056 4.01370 H 8.12405 -3.00002 2.96599 H 6.68719 -4.01604 2.75961