Using CCCCN1CCN(c2cc(CO)ccc2C2CCC(C(C)(C)C)CC2)CC1 to produce CCCCN1CCN(c2cc(C=O)ccc2C2CCC(C(C)(C)C)CC2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.