Using CCOC(=O)CNC(=O)c1c(O)[nH]c(=O)n(Cc2ccccc2)c1=O, O=C([O-])[O-] to produce Cn1c(O)c(C(=O)NCC(=O)O)c(=O)n(Cc2ccccc2)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.