Using O=C(O)c1cc2c(cn1)[nH]c1ccccc12, NC1CCc2ccccc2N(c2ccccc2)C1=O to produce NC1(C(=O)c2cc3c(cn2)[nH]c2ccccc23)CCc2ccccc2N(c2ccccc2)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.