Using O=C1c2ccccc2C(=O)N1CCCBr, Cc1nc2cccc3[nH]c(=O)c1n23 to produce Cc1nc2cccc3n(CCCN4C(=O)c5ccccc5C4=O)c(=O)c1n23, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.