Using O=C(CCc1ccccc1)Nc1cc(C(=O)NNC(=O)OCc2ccccc2)ccn1 to produce NNC(=O)c1ccnc(NC(=O)CCc2ccccc2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.