Using CN(C)CCN1C(=O)c2ccc3[nH]c4c(c3c2C1=O)CCCC4 to produce CN(C)CCN1C(=O)c2ccc3[nH]c4ccccc4c3c2C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.