preferred_name: methotrexate(out) + H(+)(out) => methotrexate(in) + H(+)(in)
preferred_name_lc: methotrexate(out) + h(+)(out) => methotrexate(in) + h(+)(in)
label: methotrexate(out) + H(+)(out) => methotrexate(in) + H(+)(in)
label_lc: methotrexate(out) + h(+)(out) => methotrexate(in) + h(+)(in)