93375-50-9

9-amino-12-(2-amino-1-hydroxy-2-oxoethyl)-4-hydroxy-10,13-dioxo-2-oxa-11,14-diazatricyclo[15.2.2.1~3,7~]docosa-1(19),3(22),4,6,17,20-hexaene-15-carboxylic acid