Using O=C1C2CCc3[nH]c4ccccc4c3C2C(=O)N1Cc1ccccc1 to produce O=C1c2ccc3[nH]c4ccccc4c3c2C(=O)N1Cc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.