Using CCOC(=O)C1CCN(c2cc(C)ccn2)CC1, CCOP(C)(=O)OCC to produce CCOP(=O)(CC(=O)C1CCN(c2cc(C)ccn2)CC1)OCC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.