Using CCCCNC(=O)[C@H](C)C[C@H](O)[C@H](C[C@H](Cc1ccc(OC)c(OCCCOC)c1)C(C)C)NC(=O)OC(C)(C)C to produce COCCCOc1cc(C[C@@H](C[C@H](NC(=O)OC(C)(C)C)C2C[C@@H](C)C(=O)O2)C(C)C)ccc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.