D-GALACTOSYL-ETCETERA-GLUCOSYLCERAMIDE beta-D-galactosyl-1,4-N-acetyl-beta-D-glucosaminyl-1,3-beta-D- galactosyl-1,4-beta-D-glucosylceramide beta-D-galactosyl-1,4-N-acetyl-beta-D-glucosaminyl-1,3-beta-D-galactosyl-1,4-beta-D-glucosylceramide