Using NCC(O)c1ccccc1, COC(=O)Cc1cc(OCC(C)=O)ccc1O to produce COC(=O)Cc1cc(OCC(C)NCC(O)c2ccccc2)ccc1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.