Using COC(=O)c1ccc(CC(OC)OC)c(N)c1, O=C1CCN(C(=O)OCc2ccccc2)CC1 to produce COC(=O)c1ccc2ccn(C3CCN(C(=O)OCc4ccccc4)CC3)c2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.