Using O=C1CCCC1, CCOC(=O)C(C(=O)n1nnc2ccccc21)C1CCCCC1 to produce CCOC(=O)C(C(=O)C1CCCC1=O)C1CCCCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.