{
    "success": true,
    "response": "```json{  'leverage': false,  'derivatives': true,  'swaps': true,  'inverse': false,  'replication_method': 'synthetic',  'ucits': true,  'type': 'ETF',  'complex_factors': [    'Swaps for replication',    'Counterparty risk',    'Synthetic structure',    'Lack of direct understanding of underlying assets'  ],  'classification': 'complex',  'supporting_data': 'The Invesco STOXX Europe 600 Optimised Financial Services UCITS ETF is a UCITS fund, which typically presumes non-complexity. However, the fund's investment policy explicitly states that it will use 'unfunded swaps' to replicate the index performance. This is a synthetic replication method, where the fund holds a basket of equities and equity related securities (which are not necessarily contained in the index) and swaps their performance for that of the target index. The MiFID II complexity assessment rules clearly state that an ETF is 'complex' if derivatives are integral to achieving its investment objective, such as using swaps for index replication. This introduces risks like counterparty risk and collateral risk, which are difficult for retail investors to understand. The KII itself lists 'Use of Derivatives for Index Tracking Risk' and 'Synthetic ETF Risk' as key considerations, highlighting the reliance on counterparties and the associated financial loss risk due to insolvency. The ESMA guidelines (CESR/09-295, Section V, Art. 38(a) and Annex I) explicitly classify instruments that fall under derivative contracts (options, futures, swaps, etc.) as 'always complex' for the purposes of the appropriateness test. Given the integral use of swaps for its core strategy, the ETF falls into this category. The specific instruction provided also states, 'If any element of... any Swap usage is identified then the classification must be complex.' Therefore, despite being a UCITS fund, its synthetic structure makes it a complex financial instrument under MiFID II.'}```",
    "note": "Response was not in expected JSON format"
}