Using O=C1CCS(=O)(=O)CC1, NC(=O)c1sc(-c2ccncc2)cc1N to produce O=C1NC2(CCS(=O)(=O)CC2)Nc2cc(-c3ccncc3)sc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.