Using C1COCCN1, O=C(O)c1ccc(CONC(=O)c2ccccc2NCc2ccncc2)cc1 to produce O=C(NOCc1ccc(C(=O)N2CCOCC2)cc1)c1ccccc1NCc1ccncc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.