Using CCOC(=O)C[C@@H]1CCc2cc(OCCCOc3ccc4c(C)coc4c3)ccc21 to produce Cc1coc2cc(OCCCOc3ccc4c(c3)CC[C@H]4CC(=O)O)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.