Using O=C(O)COCc1ccccc1, NC(=O)c1cc2c(nc1N)[nH]c1ccccc12 to produce NC(=O)c1cc2c3ccccc3n(C(=O)COCc3ccccc3)c2nc1N, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.