Using O=C(O)c1cc(NC(=O)c2cc(-c3ncccc3F)ccc2Cl)n(-c2ccccc2)n1, CC(C)(C)OC(=O)NCCN to produce NCCNC(=O)c1cc(NC(=O)c2cc(-c3ncccc3F)ccc2Cl)n(-c2ccccc2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.