Using C1COCCO1, C=CC12CCC(c3nc4c([nH]3)c(=O)n(CCC)c(=O)n4CCC)(CC1)CO2 to produce CCCn1c(=O)c2[nH]c(C34CCC(C=O)(CC3)OC4)nc2n(CCC)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.