preferred_name: a beta-D-Gal-(1->4)-beta-D-Glc-(1<->1)-Cer(d18:1(4E)) + 3'-phosphoadenylyl sulfate => beta-D-3-sulfogalactosyl-(1->4)-beta-D-glucosyl-(1<->1')-N-acylsphing-4-enine + adenosine 3',5'-bisphosphate + H(+)