preferred_name: a halide anion + a primary alcohol + H(+) => 1-haloalkane + H2O
preferred_name_lc: a halide anion + a primary alcohol + h(+) => 1-haloalkane + h2o
label: a halide anion + a primary alcohol + H(+) => 1-haloalkane + H2O
label_lc: a halide anion + a primary alcohol + h(+) => 1-haloalkane + h2o