6-amino-2-[[2-[[2-[[2-[[2-[[2-[[2-[[2-[[2-[[2-[[2-[[2-[[2-[[2-[[2-[(2-amino-1-hydroxy-3-phenylpropylidene)amino]-1,5-dihydroxy-5-iminopentylidene]amino]-1-hydroxy-3-phosphonooxypropylidene]amino]-4-carboxy-1-hydroxybutylidene]amino]-4-carboxy-1-hydroxybutylidene]amino]-1,5-dihydroxy-5-iminopentylidene]amino]-1,5-dihydroxy-5-iminopentylidene]amino]-1,5-dihydroxy-5-iminopentylidene]amino]-1,3-dihydroxybutylidene]amino]-4-carboxy-1-hydroxybutylidene]amino]-3-carboxy-1-hydroxypropylidene]amino]-4-carboxy-1-hydroxybutylidene]amino]-1-hydroxy-4-methylpentylidene]amino]-1,5-dihydroxy-5-iminopentylidene]amino]-3-carboxy-1-hydroxypropylidene]amino]hexanoic acid