Using Cc1ccc(C(=O)OCN2NCC(=O)NC2=O)cc1, [Na+] to produce Cc1ccc(C(=O)OCN2NCC(=O)N([Na])C2=O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.