4742 -OEChem-04030813132D 0 0 0 0 0 0 0 0 0999 V2000 M END > 4742 > 2 > KEGG > C01587 > C01587 Human IgA Human Igg > C01587 > http://www.genome.jp/kegg/kegg2.html > http://www.genome.jp/dbget-bin/www_bget?cpd+C01587 $$$$