Using CCOC(=O)c1ccc2c(C3=CCN(Cc4ccccc4)CC3)c[nH]c2c1 to produce CCOC(=O)c1ccc2c(C3=CCNCC3)c[nH]c2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.