α-D-mannosyl-1,3-(R1)-β-D-mannosyl-R2





SMILES:
C(O)C2(OC(OC1(C(O)C(CO)OC(O[R])C(O)1))C(O)C(O)C(O)2)

Databases
MetaCyc:  ALPHA-D-MANNOSYL-13-R1-BETA-D-MANNOSY
KEGG:  C04614