Using Cn1ncc(NC(=O)NCCNC(=O)OC(C)(C)C)c1NC(c1ccccc1)(c1ccccc1)c1ccccc1 to produce Cn1ncc(NC(=O)NCCN)c1N, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.