Using CCOC(=O)C(CCCCB1OC(C)(C)C(C)(C)O1)(CCN1CCN(c2ncccn2)CC1)NC(=O)OC(C)(C)C to produce NC(CCCCB(O)O)(CCN1CCN(c2ncccn2)CC1)C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.