Using CCCCBr, COC(=O)CN(C(=O)CCCOc1ccc2c(c1)CN1CC(=O)NC1=N2)C1CCCCC1 to produce CCCCN1C(=O)CN2Cc3cc(OCCCC(=O)N(CC(=O)OC)C4CCCCC4)ccc3N=C21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.