6216 -OEChem-04030813132D 0 0 0 0 0 0 0 0 0999 V2000 M END > 6216 > 2 > KEGG > C03381 > C03381 Complement component C4 > C03381 > http://www.genome.jp/kegg/kegg2.html > http://www.genome.jp/dbget-bin/www_bget?cpd+C03381 $$$$