Using COC(=O)C1COCCC1=O, N=C(N)CNC(=O)OCc1ccccc1 to produce O=C(NCc1nc2c(c(=O)[nH]1)COCC2)OCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.