freeEnd--1?1D-GlcNAc,p(--3a1D-Gal,p)--4b1D-GlcNAc,p--4b1D-Man,p((--?a1D-Man,p--2b1D-GlcNAc,p)--?a1D-Man,p)--2b1D-Xyl,f$MONO,Und,0,0,freeEnd