Using O=C(OC1Oc2ccccc2-n2cnc(-c3noc(C4CC4)n3)c21)c1ccccc1 to produce OC1Oc2ccccc2-n2cnc(-c3noc(C4CC4)n3)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.