Using Nc1nnc(S)n1-c1ccc(C2CC2)c2ccccc12, COC(=O)CCl to produce COC(=O)CSc1nnc(N)n1-c1ccc(C2CC2)c2ccccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.