Using CCOC(=O)C(Cc1ccc(OCCc2nc(-c3ccccc3)oc2C)c(OC)c1)OCC to produce CCOC(Cc1ccc(OCCc2nc(-c3ccccc3)oc2C)c(OC)c1)C(=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.