Using NCc1nc(-c2ccc3c(c2)Nc2ccccc2S3)cs1, COC(=O)Cl to produce COC(=O)NCc1nc(-c2ccc3c(c2)Nc2ccccc2S3)cs1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.