Using CCOC(=O)N(CCN)CC(NC(=O)c1ccccc1C(=O)O)C(=O)O to produce CCOC(=O)N1CCNC(=O)C(N2C(=O)c3ccccc3C2=O)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.