Using O=c1[nH]c2c(c3nc(-c4ccccc4F)cn13)CNCC2, CCCC=O to produce CCCCN1CCc2[nH]c(=O)n3cc(-c4ccccc4F)nc3c2C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.