preferred_name: a 2-acyl-6-alpha-D-glucosaminyl-1-(1-radyl,2-acyl-sn-glycero-3-phospho)-1D-myo-inositol + a di-trans,poly-cis-dolichyl beta-D-mannosyl phosphate => a 2-acyl-6-(alpha-D-mannosyl-(1->4)-alpha-D-glucosaminyl)-1-(1-radyl,2-acyl-sn-glycero-3-phospho)-1D-myo-inositol + a di-trans,poly-cis-dolichyl phosphate + H(+)