2-Oxa-11,14-diazatricyclo(15.2.2.1(3,7))docosa-3,5,7(22),17,19,20-hexaene-12-acetic acid, 9-amino-15-carboxy-alpha-hydroxy-4-methoxy-10,13-dioxo- 9-Amino-15-carboxy-alpha-hydroxy-4-methoxy-10,13-dioxo-2-oxa-11,14-diazatricyclo(15.2.2.1(3,7))docosa-3,5,7(22),17,19,20-hexaene-12-acetic acid 93375-68-9 Of 4949-D Of-4949D