Using COc1cc(-n2cccn2)ccc1-c1ccc(OC2CCN(C(=O)OC(C)(C)C)CC2)nn1 to produce COc1cc(-n2cccn2)ccc1-c1ccc(OC2CCNCC2)nn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.