an N-acylsphing-4-enine(in) => an N-acylsphing-4-enine(out)
an n-acylsphing-4-enine(in) => an n-acylsphing-4-enine(out)
an N-acylsphing-4-enine(in) => an N-acylsphing-4-enine(out)
an n-acylsphing-4-enine(in) => an n-acylsphing-4-enine(out)