13 C4H8O.mmp O -0.059000 1.291000 -0.515000 C 1.119000 0.482000 -0.387000 C -1.185000 0.589000 0.015000 C -0.805000 -0.893000 -0.023000 C 0.692000 -0.817000 0.321000 H 1.884000 1.033000 0.174000 H 1.517000 0.281000 -1.391000 H -1.386000 0.910000 1.051000 H -2.061000 0.837000 -0.593000 H -1.384000 -1.504000 0.676000 H -0.947000 -1.294000 -1.033000 H 1.269000 -1.684000 -0.012000 H 0.822000 -0.724000 1.405000