loop_
    _pdbx_chem_comp_synonyms.comp_id
    _pdbx_chem_comp_synonyms.ordinal
    _pdbx_chem_comp_synonyms.name
    _pdbx_chem_comp_synonyms.provenance
    ROC  1  Fortovase       DRUGBANK
    ROC  2  SAQUINAVIR      DRUGBANK
    ROC  3  "RO 31-8959"    ?