Using NCCC1(C2CCCC2)CC(=O)CC(=O)O1, O=C(O)CCc1ccco1 to produce O=C1CC(=O)OC(CCNC(=O)CCc2ccco2)(C2CCCC2)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.