Using COCCN(CCOc1ccc2[nH]c(-c3cc4ccccc4[nH]c3=O)cc2c1)Cc1ccccc1 to produce COCCNCCOc1ccc2[nH]c(-c3cc4ccccc4[nH]c3=O)cc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.