Using C=CCc1c(OCCCOc2cccc(OCC(=O)OCC)c2CCC)ccc(C(N)=O)c1OC to produce C=CCc1c(OCCCOc2cccc(OCC(=O)O)c2CCC)ccc(C(N)=O)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.