Using CCOc1nc(C(=O)NCC2CCN(C(=O)OC(C)(C)C)CC2)cc(N)c1C#N to produce CCOc1nc(C(=O)NCC2CCNCC2)cc(N)c1C#N, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.