Using O=C(O)c1cc2ccccc2cn1, CCCCc1nc2c(N)nc3ccccc3c2n1CCCN to produce CCCCc1nc2c(N)nc3ccccc3c2n1CCCNC(=O)c1cc2ccccc2cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.