Using COC(=O)C1C(=O)NC(=O)C12C(=O)N1CCCc3cccc2c31 to produce O=C1CC2(C(=O)N1)C(=O)N1CCCc3cccc2c31, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.