Using CS(=O)(=O)c1ccc(-c2cc3ccccc3c(N3CCN(C=O)CC3)n2)cc1 to produce CS(=O)(=O)c1ccc(-c2cc3ccccc3c(N3CCNCC3)n2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.