Using COc1cc(OC2CCN(C)CC2)c2c(=O)n(COC(=O)C(C)(C)C)cnc2c1 to produce COc1cc(OC2CCN(C)CC2)c2c(=O)[nH]cnc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.