Using COCOc1ccc(-c2oc3ccc(CCO)cc3c2SC)cc1OC, CI to produce COCCc1ccc2oc(-c3ccc(OCOC)c(OC)c3)c(SC)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.