Using O=C1c2ccccc2C(=O)N1Cc1cc2nc(Cl)nc(N3CCOCC3)c2s1 to produce NCc1cc2nc(Cl)nc(N3CCOCC3)c2s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.