Using O=C(Cl)N1CCOCC1, NC1(C(=O)OCc2ccccc2)CCCCC1 to produce O=C(NC1(C(=O)OCc2ccccc2)CCCCC1)N1CCOCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.