Using COc1ccc(C2CCN(C(=O)OCc3ccccc3)CC2)c(S(C)(=O)=O)c1 to produce COc1ccc(C2CCNCC2)c(S(C)(=O)=O)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.