Using O=C1OC2(c3ccc(O)cc3Oc3cc(O)ccc32)c2ccc(N=C=S)cc21 to produce O=C(O)c1ccccc1-c1c2ccc(=O)cc-2oc2cc(O)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.