13 C -1.38413 -0.07505 -0.02209 I -3.45923 -0.19615 -0.01733 C -0.76274 1.17448 -0.01782 C 0.63100 1.25208 -0.02139 C 1.38735 0.08493 -0.02921 C 0.77358 -1.16453 -0.03321 C -0.62120 -1.24471 -0.02960 O 2.74473 0.20974 -0.03294 H -1.34514 2.09192 -0.01188 H 1.12531 2.21963 -0.01825 H 1.35805 -2.07887 -0.03908 H -1.09765 -2.22153 -0.03285 H 3.13947 -0.67759 -0.04064