Using CCOC(=O)c1ccc(NCCCCCCCCCCCCCCCC(=O)OC)cc1 to produce O=C(O)CCCCCCCCCCCCCCCNc1ccc(C(=O)O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.