Using COCCc1cc2c([nH]c(=O)n2Cc2ccccc2)c(NCc2ccccc2)n1 to produce COCCc1cc2c([nH]c(=O)n2Cc2ccccc2)c(N)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.