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Figure 2 Molecular packing for C13H13NO4, viewed along the a axis. Dashed lines indicate O—H⋯O hydrogen bonds in an R22[8] motif format and weak N—H⋯O, C—H⋯O intermolecular interactions together linking the molecules into dimeric chains along [0 1 0]. H atoms not involved in hydrogen bonding have been removed for clarity. |