Using O=C1C2CCCC(C(=O)N1CCCCc1ccccc1)N2C(=O)OCc1ccccc1 to produce O=C1C2CCCC(N2)C(=O)N1CCCCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.