Using O=C1NCCO1, CCOC(=O)CCCc1c(CO)nn2c(CC)ccc2c1-c1cncc(Br)c1 to produce CCOC(=O)CCCc1c(CN2CCOC2=O)nn2c(CC)ccc2c1-c1cncc(Br)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.