C,1,51.49,s, O,2,,, C,3,173.2,s, O,4,,, C,5,27.8,s, C,6,37.9,s, C,7,,, C,8,29.79,s, O,9,,, H,10,3.61,s, H,11,3.61,s, H,12,3.61,s, H,13,2.75,t,6.9 H,14,2.75,t,6.9 H,15,2.59,t,6.9 H,16,2.59,t,6.9 H,17,2.19,s, H,18,2.19,s, H,19,2.19,s,