1 Z99 2-[(1s,2s)-2-carboxycyclopropyl]-3-(9h-xanthen-9-yl)-D-alanine 1.000 2 WAG (1s,2r)-2-[(2s)-2-azanyl-1-oxidanyl-1-oxidanylidene-3-(9h-xanthen-9-yl)propan-2-yl]cyclopropane-1-carboxylic acid 1.000