Using O=C(O)C1=NN=C(c2cccnc2)C1, Cc1cc(-c2ccn(CCN)n2)ccc1C#N to produce Cc1cc(-c2ccn(CCNC(=O)c3cc(-c4cccnc4)n[nH]3)n2)ccc1C#N, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.