Using O=C1NC(=O)c2ccccc21, COCN1c2cc(CO)ccc2Sc2nccnc21 to produce COCN1c2cc(CN3C(=O)c4ccccc4C3=O)ccc2Sc2nccnc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.