PVE (1S)-1-CARBOXY-5-[(3-CARBOXYPROPANOYL)AMINO]-8,9-DIHYDROXY-1,2,3,4-TETRAHYDROPYRIMIDO[1,2-A]QUINOLIN-11-IUM c1c2cc(c(cc2[n+]3c(c1NC(=O)CCC(=O)O)NCC[C@H]3C(=O)O)O)O