18 C 0.21390 1.63670 0.82440 C -0.76580 2.51350 1.23780 C -0.46170 3.84880 1.44740 C 0.82510 4.31550 1.23360 C 1.81430 3.45210 0.81510 C 1.51630 2.10060 0.60620 C 2.56570 1.17310 0.16030 C 3.52600 1.59770 -0.69450 C 3.42020 2.86670 -1.29940 O 4.32890 3.29030 -1.98480 Br -1.81170 5.04190 2.02160 H -0.02380 0.59540 0.66490 H -1.77220 2.15800 1.40230 H 1.05340 5.35870 1.39490 H 2.81690 3.81740 0.64840 H 2.57080 0.15290 0.51460 H 4.37300 0.96420 -0.91300 H 2.53110 3.46220 -1.15330