Using Cn1ncc2cc(C3C(=O)NCCN3C(=O)OC(C)(C)C)ccc21 to produce Cn1ncc2cc(C3CNCCN3C(=O)OC(C)(C)C)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.