Using O=C(OCc1ccccc1)ON1C(=O)CCC1=O, COC(=O)c1ccc(CN)cc1O to produce COC(=O)c1ccc(CNC(=O)OCc2ccccc2)cc1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.