Using COC(=O)CCc1ccc(C(=O)CN2CCN(c3ccncc3)CC2)cc1 to produce O=C(O)CCc1ccc(C(=O)CN2CCN(c3ccncc3)CC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.