Using C=CCc1ccc(N2C(=O)C3=C(CCCC3)C2=O)cc1O to produce CC1Cc2ccc(N3C(=O)C4=C(CCCC4)C3=O)cc2O1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.