Using Cc1cccc(OC2CCN(C(=O)C(=O)c3c[nH]c4ccccc34)CC2)c1 to produce Cc1cccc(OC2CCN(CCc3c[nH]c4ccccc34)CC2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.