6-N-acetyl-alpha-D-glucosaminyl-1-(1-radyl,2-acyl-sn-glycero-3-phospho)-1D-myo-inositol(1-)
6-n-acetyl-alpha-d-glucosaminyl-1-(1-radyl,2-acyl-sn-glycero-3-phospho)-1d-myo-inositol(1-)
It is a GlcNAc-PI where R1 can be an alkyl or an acyl chain.