GNGCER
'ALPHA'-N-ACETYLNEURAMINYL-2,3-'BETA'-D-GALACTOSYL-1,4-' BETA'-D-GLUCOSYLCERAMIDE (N-ACETYLNEURAMINYL)-D-GALACTOSYL-D-GLUCOSYLCERAMIDE
'ALPHA'-N-ACETYLNEURAMINYL-2,3-'BETA'-D-GALACTOSYL-1,4-' BETA'-D-GLUCOSYLCERAMIDE (N-ACETYLNEURAMINYL)-D-GALACTOSYL-D-GLUCOSYLCERAMIDE