(R)-3-hydroxybutanoate(in) + 2 Na(+)(in) => (R)-3-hydroxybutanoate(out) + 2 Na(+)(out)
(r)-3-hydroxybutanoate(in) + 2 na(+)(in) => (r)-3-hydroxybutanoate(out) + 2 na(+)(out)
(R)-3-hydroxybutanoate(in) + 2 Na(+)(in) => (R)-3-hydroxybutanoate(out) + 2 Na(+)(out)
(r)-3-hydroxybutanoate(in) + 2 na(+)(in) => (r)-3-hydroxybutanoate(out) + 2 na(+)(out)