C,1,51.85,s, O,2,,, C,3,171.23,s, O,4,,, C,5,38.9,s, C,6,74.32,s, C,7,133.32,s, C,8,120.4,s, C,9,173.2,s, O,10,,, O,11,,, H,12,3.7,s, H,13,3.7,s, H,14,3.7,s, H,15,2.74,d,6.2 H,16,2.74,d,6.2 H,17,5.19,td,"6.2,3.4" H,18,6.14,dd,"7.4,3.4" H,19,6.16,d,7.4