Using O=C(O)Cc1ccccc1, NC(=O)c1c(N)sc2c1CCCC2 to produce NC(=O)c1c(NC(=O)Cc2ccccc2)sc2c1CCCC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.