oxalate(in) + chloride(out) = oxalate(out) + chloride(in)
oxalate(in) + chloride(out) = oxalate(out) + chloride(in)
oxalate(in) + chloride(out) = oxalate(out) + chloride(in)
oxalate(in) + chloride(out) = oxalate(out) + chloride(in)