Showing structure for (2r)-3-{[2-({[(1s,2r,3r,4s,5r,6s,8r,9s,10s,13s,16s,17r,18s)-11-ethyl-8,9-dihydroxy-4,6,16,18-tetramethoxy-11-azahexacyclo[7.7.2.1²,⁵.0¹,¹⁰.0³,⁸.0¹³,¹⁷]nonadecan-13-yl]methoxy}carbonyl)phenyl]-c-hydroxycarbonimidoyl}-2-methylpropanoic acid