Using COC(=O)c1ccc2c(c1)nc(-c1ccccc1)c1ccncc12 to produce O=C(O)c1ccc2c(c1)nc(-c1ccccc1)c1ccncc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.