Using Cc1nc(CNC2CCN(C(=O)OC(C)(C)C)CC2)c(C)[nH]1, O=C([O-])[O-] to produce Cc1nc(C)n2c1CN(C1CCN(C(=O)OC(C)(C)C)CC1)C2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.