Using CCOC(=O)c1[nH]c(=O)n(C2CCCN(C(=O)OCc3ccccc3)C2)c1-c1ccccc1 to produce O=C(O)c1[nH]c(=O)n(C2CCCN(C(=O)OCc3ccccc3)C2)c1-c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.