Using O=C(O)c1ncn(-c2ccccc2)n1, CC1(C)CN(C(=O)OC(C)(C)C)CCN1 to produce CC(C)(C)OC(=O)N1CCN(C(=O)c2ncn(-c3ccccc3)n2)C(C)(C)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.