Using O=C(O)c1c[nH]c2ccccc12, NC1N=C(c2ccccc2)c2ccccc2NC1=O to produce O=C(NC1N=C(c2ccccc2)c2ccccc2NC1=O)c1c[nH]c2ccccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.