preferred_name: alpha-N-acetylneuraminosyl-(2->3)-beta-D-galactosyl-(1->3)-[alpha-N-acetylneuraminosyl-(2->6)]-N-acetyl-beta-D-glucosaminyl-(1->3)-beta-D-galactosyl-(1->4)-beta-D-glucosyl-(1<->1')-ceramide(t18:0)(2-)