Using Nc1ccc(F)nc1, COC(=O)C1CCCN1c1nc2c(c(Nc3cc(C4CC4)[nH]n3)n1)CCC2 to produce O=C(Nc1ccc(F)nc1)C1CCCN1c1nc2c(c(Nc3cc(C4CC4)[nH]n3)n1)CCC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.