Using C1CCNC1, CCN1CC(=O)c2ccc3ccccc3c2S1(=O)=O to produce CCN1C=C(N2CCCC2)c2ccc3ccccc3c2S1(=O)=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.