Using OC1CCCC1, CCOC(=O)C1(C2NCCc3c2[nH]c2ccc(Cl)cc32)CCC1 to produce O=C(OC1CCCC1)C1(C2NCCc3c2[nH]c2ccc(Cl)cc32)CCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.