Using O=C1NC(=O)c2ccccc21, Clc1nc2nsnc2nc1Cl to produce O=C1c2ccccc2C(=O)N1c1nc2nsnc2nc1N1C(=O)c2ccccc2C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.