Using CC1CN(c2cc3nc4c(cc3cc2F)c(=O)c(C(=O)O)cn4C)CCN1, C=O to produce CC1CN(c2cc3nc4c(cc3cc2F)c(=O)c(C(=O)O)cn4C)CCN1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.