Using O=[N+]([O-])c1ccc2c(C3=CN4CCC3CC4)c[nH]c2c1 to produce Nc1ccc2c(C3=CN4CCC3CC4)c[nH]c2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.