Using COc1ccc(C(O)CCN2CCc3nc(N)sc3CC2)c(OC)c1 to produce COc1ccc(C=CCN2CCc3nc(N)sc3CC2)c(OC)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.