Using Cc1cc(-c2ccc(C(C)(C)C)cc2)c(C)cc1N, O=C1CCCCN1 to produce Cc1cc(-c2ccc(C(C)(C)C)cc2)c(C)cc1N=C1CCCCN1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.