Using CN(C(=O)OC(C)(C)C)C1CCN(c2nccnc2C2CN(c3ccc4ccccc4n3)C2)C1 to produce CNC1CCN(c2nccnc2C2CN(c3ccc4ccccc4n3)C2)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.