Using NC1CCN(Cc2ccccc2)CC1, O=C(O)c1n[nH]c2ccccc12 to produce O=C(NC1CCN(Cc2ccccc2)CC1)c1n[nH]c2ccccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.