Using COS(=O)(=O)OC, Oc1cc(COC23CC4CC(CC(C4)C2)C3)nn1C1CCCCC1 to produce COc1cc(COC23CC4CC(CC(C4)C2)C3)nn1C1CCCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.