6-alpha-D-glucosaminyl-1-(1-radyl,2-acyl-sn-glycero-3-phospho)-1D-myo-inositol zwitterion
6-alpha-d-glucosaminyl-1-(1-radyl,2-acyl-sn-glycero-3-phospho)-1d-myo-inositol zwitterion
A GlcN-PI where R1 can be an alkyl or an acyl chain and R2 is an acyl chain.