Using Cn1c(-c2cncc(N)c2)cc2ccccc21, CCOC(=O)C1(C=O)CCC1 to produce CCOC(=O)C1(CNc2cncc(-c3cc4ccccc4n3C)c2)CCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.