Using COc1ccc(CNc2nc(SC)ncc2C=O)cc1Cl, Cn1ccnc1 to produce COc1ccc(CNc2nc(SC)ncc2C(O)c2nccn2C)cc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.