Using Nc1ncc(C2CCC2)s1, O=C(O)Cc1ccc2ncccc2c1 to produce O=C(Cc1ccc2ncccc2c1)Nc1ncc(C2CCC2)s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.