Using CC1C(=O)N(S)c2ccc(CN3N=C(c4ccc(Cl)cc4)COC3=O)cc21 to produce O=C1Cc2cc(CN3N=C(c4ccc(Cl)cc4)COC3=O)ccc2N1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.